Human Anatomy Medical Dictionary: Grow Your Vocabulary, #9

By Blake Pieck

2nd Edition of my Human Anatomy Part One Dictionary. It covers over 7800 words and phrases that focus on 6 topics.

 

Embark on a journey through the intricate landscape of the human body with our meticulously curated Human Anatomy Part One Dictionary. With over 7800 meticulously researched and expertly defined terms, this comprehensive reference guide serves as an indispensable companion for students, educators, healthcare professionals, and enthusiasts alike.

 

Anatomical Terminology: Unlock the language of anatomy with clarity and precision. From directional terms like anterior and posterior to structural terms like organs and tissues, this section elucidates the fundamental vocabulary essential for understanding the human body's structure and function.

 

Clinical Anatomy: Delve into the application of anatomical knowledge in clinical settings. Explore the correlation between anatomical structures and medical conditions, providing invaluable insight into diagnosis, treatment, and surgical procedures.

 

Comparative Anatomy: Gain a deeper understanding of human anatomy by comparing it to other species. Discover the evolutionary connections and variations in anatomical structures across different organisms, shedding light on the principles of homology and analogy.

 

Developmental Anatomy: Unravel the mysteries of human growth and development. Trace the journey from conception to adulthood, examining the sequential changes in anatomy and the formation of structures vital for life.

 

Microscopic Anatomy: Peer into the microscopic realm to uncover the hidden intricacies of human tissues and cells. Explore the structure and function of cells, tissues, and organs at a microscopic level, illuminating the building blocks of the human body.

 

Radiological Anatomy: Navigate the realm of medical imaging with confidence. Learn to interpret radiographic images such as X-rays, CT scans, and MRIs, correlating radiological findings with anatomical structures to facilitate accurate diagnosis and treatment planning.

• Language: English
• Publisher: Blake Pieck
• Release date: Sep 4, 2023
• ISBN: 9798223231448

Book preview

Anatomical Terminology Dictionary

A

Abdomen   -   Anatomical Position, Region   -   The area of the body between the thorax and pelvis. 

Abdominal Plane   -   Planes and Sections, Body Regions   -   A plane that divides the body into the upper (thoracic) and lower (abdominal) regions. 

Abdominothoracic   -   Directional Terms, Regions   -   Relating to both the abdomen and the thoracic cavity. 

Abduction   -   Anatomical Position, Movement   -   Abduction is the movement of a body part away from the midline of the body. 

Abduction Plane   -   Planes and Sections, Movement   -   A plane that describes the position when a limb is moved away from the body’s midline. 

Aberrant   -   Anatomical Position, Directional Term   -   Deviating from the normal or usual course. 

Aboral   -   Directional Terms, Relative Positions   -   Opposite to or away from the mouth. 

Accessory   -   Anatomical Position, Structural Term   -   Supplementary or additional, such as the accessory nerve. 

Accessory Plane   -   Planes and Sections, Variations   -   A secondary or supplementary plane to the primary anatomical planes. 

Acetabular   -   Directional Terms, Regions   -   Relating to the hip socket or acetabulum. 

Acetabular Axis   -   Planes and Sections, Bones   -   An imaginary line running through the hip socket or acetabulum. 

Acetabulum   -   Anatomical Position, Structural Term   -   The socket in the pelvis that articulates with the head of the femur. 

Acral   -   Directional Terms, Extremities   -   Relating to the extremities (hands and feet). 

Acromial   -   Directional Terms, Regions   -   Relating to the acromion, the lateral extension of the spine of the scapula. 

Acromial Plane   -   Planes and Sections, Bones   -   A plane that runs through the acromion, a bony process on the scapula. 

Acromio-Clavicular Plane   -   Planes and Sections, Joints   -   A plane that relates to the joint formed between the acromion and the clavicle. 

Acromion   -   Anatomical Position, Structural Term   -   The lateral projection of the scapula that forms the highest point of the shoulder. 

Adaxial   -   Directional Terms, Relative Positions   -   Situated on the side toward the axis or midline. 

Adducted Plane   -   Planes and Sections, Movement   -   A plane that describes the position when a limb is moved closer to the body’s midline. 

Adduction   -   Anatomical Position, Movement   -   Adduction is the movement of a body part toward the midline of the body. 

Adipose   -   Anatomical Position, Tissue Type   -   Adipose tissue is body fat or fat tissue. 

Adnexal   -   Directional Terms, Attachments   -   Referring to accessory or adjoining anatomical parts of an organ. 

Adrenal   -   Anatomical Position, Glandular Term   -   Relating to the adrenal glands, which produce hormones like cortisol. 

Adventitial   -   Directional Terms, Layers   -   The outermost layer of a blood vessel, organ, or other structure. 

Afferent   -   Anatomical Position, Directional Term   -   Conducting or directing inward or towards a structure (e.g., afferent nerves carry impulses to the CNS). 

Afferent Plane   -   Planes and Sections, Neural   -   A plane related to afferent or sensory pathways. 

Alar   -   Anatomical Position, Structural Term   -   Pertaining to the wing or wings; winglike. 

Alar Plane   -   Planes and Sections, Face   -   A plane that runs through the ala or wing of the nose. 

Alar-Zygomatic Plane   -   Planes and Sections, Face   -   A plane that runs between the ala of the nose and the zygomatic bone or cheekbone. 

Alveolar   -   Anatomical Position, Structural Term   -   Related to the small socket-like structures in the jaws or the air sacs of the lungs. 

Alveolar Plane   -   Planes and Sections, Dental   -   A plane related to the alveoli or sockets in the jaws holding the teeth. 

Alveolus   -   Anatomical Position, Structural Term   -   A small air sac in the lungs where oxygen and carbon dioxide exchange takes place. 

Ampulla   -   Anatomical Position, Structural Term   -   An expanded portion or dilation in a canal or duct. 

Ampullary Plane   -   Planes and Sections, Organs   -   A plane that relates to the ampulla, a dilated portion of a duct or tube. 

Amygdala   -   Anatomical Position, Brain Structure   -   Almond-shaped part of the brain that plays a key role in processing emotions. 

Anal   -   Directional Terms, Openings   -   Relating to the anus or the opening at the end of the digestive tract. 

Anastomosis   -   Anatomical Position, Structural Term   -   A connection between two structures, such as blood vessels. 

Anastomotic   -   Anatomical Position, Structural Term   -   Relating to or denoting an anastomosis, the connection between two structures. 

Anatomic Plane   -   Planes and Sections, Fundamental Concepts   -   A standard plane used to describe locations and relations of body parts. 

Anatomical Alignment   -   Planes and Sections, Posture   -   Refers to the proper positioning of joints and limbs in relation to the body’s primary planes. 

Anatomical Plane   -   Planes and Sections, Fundamental Concepts   -   An anatomical plane is an imaginary flat surface used as a reference to describe the location or orientation of structures within the body. 

Anatomical Position   -   Directional Terms, Standard Reference   -   A standardized position where the body stands erect, facing forward, arms at sides with palms forward. 

Anatomical Reference Plane   -   Planes and Sections, Fundamental Concepts   -   A standard plane that serves as a point of reference for anatomical study. 

Anatomy   -   Anatomical Position, General   -   Anatomy is the study of the structure and organization of the body. 

Anconeal   -   Directional Terms, Regions   -   Relating to the anconeus, a small muscle of the elbow. 

Anconeus   -   Anatomical Position, Structural Term   -   A small triangular muscle at the posterior aspect of the elbow. 

Angular   -   Anatomical Position, Directional Term   -   At or forming an angle. 

Angular Axis   -   Planes and Sections, Movement   -   An imaginary line around which rotation occurs based on an angle. 

Angular Incision   -   Planes and Sections, Medical Procedures   -   A surgical cut made at an angle relative to the reference plane. 

Angular Plane   -   Planes and Sections, Geometry   -   A plane that defines or measures an angle within anatomical structures. 

Angular Section   -   Planes and Sections, Geometry   -   A section of a structure that is at an angle, not parallel or perpendicular to the reference plane. 

Ankle   -   Anatomical Position, Region   -   The joint connecting the foot with the leg. 

Ankle Axis   -   Planes and Sections, Joints   -   An imaginary line around which the ankle joint rotates. 

Ankle Plane   -   Planes and Sections, Joints   -   A plane that runs through the ankle joint, dividing it into different sections. 

Anodal   -   Directional Terms, Electrical Currents   -   Relating to the anode, or the positive pole in electrical therapy. 

Anomalous   -   Directional Terms, Conditions   -   Deviating from what is standard, normal, or expected. 

Anserine   -   Anatomical Position, Structural Term   -   Refers to a part that resembles a goose, as in pes anserinus on the medial side of the knee. 

Antebrachial   -   Directional Terms, Regions   -   Relating to the forearm. 

Antecubital   -   Anatomical Position, Region   -   The space located at the front of the elbow. 

Antecubital Plane   -   Planes and Sections, Limbs   -   A plane that runs through the antecubital fossa, the front of the elbow. 

Anterior   -   Anatomical Position, Directional Term   -   Anterior refers to the front or forward-facing side of the body in the anatomical position. 

Anterior Median Plane   -   Planes and Sections, Directional Reference   -   A plane that divides the body into equal left and right halves at the front. 

Anterior Plane   -   Planes and Sections, Directional Reference   -   A plane that describes structures located towards the front of the body. 

Anterior Superior Iliac Spine   -   Anatomical Position, Structural Term   -   A bony prominence on the ilium, part of the pelvis, commonly used as a landmark in physical examination. 

Anterior-Posterior Axis   -   Planes and Sections, Directional Reference   -   An imaginary line running from the front to the back of a structure or body. 

Anterior-Vertical Plane   -   Planes and Sections, Directional Reference   -   A plane that divides anterior structures in a vertical orientation. 

Anterolateral   -   Directional Terms, Relative Positions   -   Located anteriorly and to the side. 

Anterolateral Plane   -   Planes and Sections, Directional Reference   -   A plane that describes structures located towards the front and side of the body. 

Anteromedial   -   Directional Terms, Relative Positions   -   Located anteriorly and toward the midline. 

Anteroposterior   -   Directional Terms, Axis   -   From the front to the back of the body. 

Anteroposterior Plane   -   Planes and Sections, Directional Reference   -   A plane that runs from the front to the back of the body. 

Antihelix   -   Anatomical Position, Structural Term   -   The curved prominence of cartilage parallel with and in front of the helix of the ear. 

Antitragus   -   Anatomical Position, Structural Term   -   A small tubercle on the external part of the ear, opposite the tragus. 

Antral   -   Directional Terms, Cavities   -   Relating to a cavity or chamber, often referring to the sinus or stomach. 

Antrorse   -   Directional Terms, Orientations   -   Directed forward or upward. 

Anular Plane   -   Planes and Sections, Geometry   -   A plane that circles or encloses a tubular structure. 

Anulus   -   Anatomical Position, Structural Term   -   A ring or ringlike structure. 

Anus   -   Anatomical Position, Region   -   The opening at the end of the digestive tract where bowel contents leave the body. 

Aorta   -   Anatomical Position, Structural Term   -   The main and largest artery in the human body, originating from the left ventricle of the heart. 

Aortic   -   Directional Terms, Vessels   -   Relating to the aorta, the main artery leaving the heart. 

Aortic Plane   -   Planes and Sections, Organs   -   A plane that runs through the aorta, the main blood vessel of the body. 

Apex   -   Anatomical Position, Structural Term   -   Apex is the tip or highest point of a structure. 

Apex-Base Plane   -   Planes and Sections, Directional Reference   -   A plane that divides a structure from its tip or apex to its base. 

Apical   -   Directional Terms, Relative Positions   -   Pertaining to or located at the apex. 

Apical Plane   -   Planes and Sections, Directional Reference   -   A plane that runs from the apex or tip of a structure to its base. 

Apical-Basal Axis   -   Planes and Sections, Directional Reference   -   An imaginary line that runs from the apex to the base of a structure. 

Apicodorsal   -   Directional Terms, Relative Positions   -   Relating to both the apex and the dorsal side. 

Aplanatic   -   Directional Terms, Curvatures   -   Eliminating or reducing spherical aberration in lenses. 

Aponeurosis   -   Anatomical Position, Structural Term   -   A flat, wide tendinous sheet that connects muscle to bone or other tissues. 

Aponeurotic   -   Directional Terms, Tissue Types   -   Relating to an aponeurosis, which is a flat, sheet-like tendon. 

Appendicular   -   Anatomical Position, Directional Term   -   Relating to the limbs and their attachment to the trunk. 

Aqueduct   -   Anatomical Position, Structural Term   -   A canal or passage, such as the aqueduct of Sylvius in the brain. 

Aqueous   -   Anatomical Position, Fluid Term   -   Watery, as in the aqueous humor of the eye. 

Arachnoid   -   Anatomical Position, Structural Term   -   The middle of the three meninges that cover the brain and spinal cord. 

Arch   -   Anatomical Position, Structural Term   -   A curved or rounded structure, typically used to describe structures in the foot or the aorta. 

Arcuate   -   Directional Terms, Shapes   -   Having the form of a bow or arch. 

Arcuate Plane   -   Planes and Sections, Geometry   -   A plane that curves or arcs, often describing a curved structure. 

Areola   -   Anatomical Position, Structural Term   -   The pigmented area surrounding the nipple of the breast or a small space or interstice in tissues. 

Arm Axis   -   Planes and Sections, Limbs   -   An imaginary line around which the arm rotates. 

Arrector Pili   -   Anatomical Position, Structural Term   -   A small muscle attached to hair follicles that causes the hair to stand on end when contracted. 

Arterial   -   Directional Terms, Vessels   -   Relating to arteries, which carry blood away from the heart. 

Arterial Plane   -   Planes and Sections, Circulatory System   -   A plane related to the arteries or major blood vessels. 

Artery   -   Anatomical Position, Structural Term   -   A blood vessel that carries oxygenated blood away from the heart to the rest of the body. 

Articular   -   Directional Terms, Surfaces   -   Pertaining to a joint or the surface of a bone that articulates with another bone. 

Articular Axis   -   Planes and Sections, Joints   -   An imaginary line defining the rotation or movement of a joint. 

Articular Plane   -   Planes and Sections, Joints   -   A plane that describes the surface of a joint where two bones meet. 

Articulate   -   Directional Terms, Movements   -   To unite by forming a joint or junction. 

Articulation   -   Anatomical Position, Movement   -   The junction of bones or the manner in which bones connect to each other. 

Articulation Axis   -   Planes and Sections, Joints   -   An imaginary line around which articulation or joint movement occurs. 

Ascending   -   Anatomical Position, Directional Term   -   Moving upward or towards the head. 

Ascending Plane   -   Planes and Sections, Directional Reference   -   A plane that moves upwards in relation to a given reference point. 

Asternal Plane   -   Planes and Sections, Thoracic   -   A plane that runs lateral to the sternum. 

Astigmatism   -   Anatomical Position, Condition Term   -   A defect in the eye or lens causing distorted images due to irregular curvature of the cornea. 

Asymmetrical   -   Directional Terms, Shapes   -   Not identical on both sides of a central line. 

Asymmetrical Plane   -   Planes and Sections, Variations   -   A plane that divides a structure into unequal parts. 

Asymmetry   -   Anatomical Position, Condition Term   -   Lack of equality or equivalence between parts or aspects of something. 

Atavistic   -   Anatomical Position, Structural Term   -   A throwback trait, appearing due to the reoccurrence of ancestral characteristics. 

Ataxic   -   Directional Terms, Movements   -   Relating to uncoordinated movements due to muscular or nervous system abnormalities. 

Atlas   -   Anatomical Position, Structural Term   -   The first cervical vertebra that supports the head. 

Atlas Plane   -   Planes and Sections, Spine   -   A plane related to the atlas, the first cervical vertebra of the spine. 

Atlas-Axis Plane   -   Planes and Sections, Spine   -   A plane that relates to the articulation between the first two cervical vertebrae. 

Atrial Plane   -   Planes and Sections, Cardiac   -   A plane that divides or relates to the atria, the upper chambers of the heart. 

Atrioseptal   -   Directional Terms, Divisions   -   Pertaining to the septum between atria of the heart. 

Atrioventricular   -   Directional Terms, Pathways   -   Relating to the atrium and the ventricle of the heart. 

Atrium   -   Anatomical Position, Structural Term   -   One of the two upper chambers of the heart. 

Atrophic   -   Directional Terms, Conditions   -   Pertaining to wasting away or diminished volume. 

Atrophy   -   Anatomical Position, Condition Term   -   A reduction in size or wasting away of a body part, typically due to disease or lack of use. 

Auditory   -   Anatomical Position, Structural Term   -   Relating to the sense or organs of hearing. 

Auditory Plane   -   Planes and Sections, Ears   -   A plane that relates to structures within the ear. 

Auricle   -   Anatomical Position, Structural Term   -   The external ear or a structure resembling an ear, such as the atrial auricle of the heart. 

Auricular   -   Anatomical Position, Directional Term   -   Pertaining to the ear or the region of the ear. 

Auricular Plane   -   Planes and Sections, Ears   -   A plane that runs through the auricle or outer ear. 

Autonomic   -   Anatomical Position, System   -   Pertaining to the autonomic nervous system, which controls involuntary body functions. 

Axial   -   Anatomical Position, Directional Term   -   Relating to the head, neck, and trunk; the axis of the body. 

Axial Plane   -   Directional Terms, Planes And Sections   -   The axial plane is a horizontal plane that divides the body into upper and lower portions. 

Axilla   -   Anatomical Position, Region   -   The armpit or underarm area. 

Axillary   -   Anatomical Position, Directional Term   -   Relating to the axilla or armpit. 

Axillary Plane   -   Planes and Sections, Body Regions   -   A plane that divides the body through the axilla or armpit. 

Axis   -   Anatomical Position, Structural Term   -   The second cervical vertebra around which the first vertebra rotates, allowing head rotation. 

Axis Of Rotation   -   Planes and Sections, Movement   -   An imaginary line around which a body segment rotates. 

Azygos   -   Anatomical Position, Structural Term   -   Referring to structures, like veins, that are unpaired or singular. 

B

Ball-And-Socket Joint   -   Anatomical Position, Structural Term   -   A joint that allows for free rotation of the limb around the joint. 

Barbiturate   -   Anatomical Position, Compound   -   Any of a class of sedative and sleep-inducing drugs. 

Baroreceptor   -   Anatomical Position, Structural Term   -   A receptor sensitive to changes in pressure. 

Basal   -   Anatomical Position, Directional Term   -   Situated at the base or bottom; denoting a standard or reference state of a function. 

Basal Cell   -   Anatomical Position, Cell Type   -   A type of cell in the basal layer of the epidermis. 

Basal Ganglia   -   Anatomical Position, Brain Structure   -   A group of nuclei in the brain involved in voluntary motor movements and procedural learning. 

Basal Ganglia Plane   -   Planes and Sections, Neural   -   A plane dividing or relating to the basal ganglia, a group of nuclei in the brain. 

Basal Lamina   -   Directional Terms, Tissue Layers   -   Thin layer of extracellular matrix underlying epithelial tissues. 

Basal Nuclei Plane   -   Planes and Sections, Neural   -   Another term for Basal Ganglia Plane, dividing or relating to the basal nuclei or ganglia of the brain. 

Basal Plane   -   Planes and Sections, Directional Reference   -   A plane at or relating to the base or bottom of a structure. 

Base   -   Anatomical Position, Structural Term   -   The bottom or lower part of an organ or structure. 

Baseline   -   Anatomical Position, Directional Term   -   A standard by which things are measured or compared. 

Basidorsal   -   Directional Terms, Relative Positions   -   From the base to the dorsal side. 

Basifrontal   -   Directional Terms, Cranial Surfaces   -   From the base to the frontal area of the skull. 

Basifrontal Plane   -   Planes and Sections, Skull   -   A plane at the base of the frontal bone in the skull. 

Basilar   -   Anatomical Position, Directional Term   -   Located at the base, especially the base of the brain. 

Basilar Plane   -   Planes and Sections, Skull   -   A plane that refers to the base of the skull. 

Basioccipital Plane   -   Planes and Sections, Skull   -   A plane concerning the basioccipital bone at the base of the skull. 

Basiparallel   -   Directional Terms, Relative Positions   -   Parallel with the base or bottom. 

Basipetal   -   Directional Terms, Growth Directions   -   Growth or functional activity moving from the apex toward the base or from the periphery toward the center. 

Basisphenoid Plane   -   Planes and Sections, Skull   -   A plane concerning the basisphenoid bone in the base of the skull. 

Basitemporal   -   Directional Terms, Cranial Surfaces   -   From the base to the temporal area of the skull. 

Basiventral   -   Directional Terms, Relative Positions   -   From the base to the ventral side. 

Basivertebral Plane   -   Planes and Sections, Spinal   -   A plane concerning the basivertebral veins and the inner parts of the vertebral body. 

Basophils   -   Anatomical Position, Cell Type   -   A type of white blood cell that releases histamine during allergic reactions. 

Bell’s Palsy   -   Anatomical Position, Condition Term   -   A sudden, temporary weakness or paralysis of the facial muscles. 

Benign   -   Anatomical Position, Condition Term   -   Non-malignant, not harmful in effect. 

Benthic Plane   -   Planes and Sections, Evolutionary   -   A plane related to organisms living at the bottom of water bodies, particularly oceans. 

Biangular   -   Directional Terms, Shapes   -   Having two angles or bends. 

Biarticular   -   Directional Terms, Joints   -   Referring to something spanning two joints. 

Biaxial   -   Directional Terms, Movement Axes   -   Having two axes of rotation. 

Biaxial Plane   -   Planes and Sections, Joints   -   A plane concerning joints that have movement around two axes. 

Biceps   -   Anatomical Position, Muscle   -   A muscle having two heads, most notably the biceps brachii of the upper arm. 

Bicipital Plane   -   Planes and Sections, Muscular   -   A plane relating to a muscle with two heads or origins. 

Biconcave   -   Directional Terms, Shapes   -   Concave on both sides. 

Biconcave Plane   -   Planes and Sections, Geometry   -   A plane concerning a structure that is concave on both sides. 

Bicondylar Plane   -   Planes and Sections, Joints   -   A plane relating to or passing through two condyles or rounded articular surfaces. 

Biconjugate Plane   -   Planes and Sections, Obstetrics   -   A plane related to the diagonal diameter of the pelvic inlet, measured between the symphysis pubis and sacral promontory. 

Biconvex   -   Directional Terms, Shapes   -   Convex on both sides. 

Biconvex Plane   -   Planes and Sections, Geometry   -   A plane concerning a structure that is convex on both sides. 

Bicornate   -   Directional Terms, Shapes   -   Having two horns or horn-shaped parts. 

Bicoronal Plane   -   Planes and Sections, Skull   -   A plane that passes through both coronal sutures of the skull. 

Bicusp   -   Directional Terms, Shapes   -   Having two points or cusps, typically referring to teeth. 

Bicusp Plane   -   Planes and Sections, Dental   -   A plane relating to teeth that have two cusps or points. 

Bicuspid   -   Anatomical Position, Structural Term   -   A tooth with two points, specifically the premolar tooth. 

Bicuspid Plane   -   Planes and Sections, Dental   -   A plane dividing or relating to the bicuspid teeth or premolars. 

Bifacial Plane   -   Planes and Sections, Directional Reference   -   A plane related to a structure that has two faces or surfaces. 

Bifurcate   -   Anatomical Position, Directional Term   -   Splitting into two branches. 

Bifurcation   -   Directional Terms, Divisions   -   The point where something divides into two branches or parts. 

Bifurcation Plane   -   Planes and Sections, Organs   -   A plane at the point where a structure splits into two branches. 

Bilaminar Plane   -   Planes and Sections, Developmental   -   A plane referring to the bilaminar embryonic disc during the early stages of embryonic development. 

Bilateral   -   Anatomical Position, Directional Term   -   Relating to both sides of the body. 

Bilateral Plane   -   Planes and Sections, Fundamental Concepts   -   A plane that affects or refers to both sides of the body. 

Bile   -   Anatomical Position, Fluid   -   A greenish-yellow fluid produced by the liver, stored in the gallbladder, and released into the small intestine. 

Biliary   -   Anatomical Position, Directional Term   -   Relating to bile or the bile ducts. 

Bilirubin   -   Anatomical Position, Compound   -   A yellow compound formed by the breakdown of hemoglobin in the liver. 

Bilobar Plane   -   Planes and Sections, Organs   -   A plane dividing or relating to a structure with two lobes. 

Bilobed   -   Directional Terms, Shapes   -   Divided into or consisting of two lobes. 

Bimanual   -   Directional Terms, Actions   -   Using or requiring both hands. 

Binasal Plane   -   Planes and Sections, Facial   -   A plane passing through both nasal passages. 

Binaural   -   Directional Terms, Hearing   -   Relating to both ears. 

Biomechanical   -   Directional Terms, Movement Mechanics   -   Relating to the mechanical laws concerning the movement or structure of living organisms. 

Biomechanics   -   Anatomical Position, Study   -   The study of the mechanical laws relating to the movement or structure of living organisms. 

Biparietal   -   Directional Terms, Cranial Measurements   -   Measurement between the two parietal eminences of the skull. 

Biparietal Plane   -   Planes and Sections, Skull   -   A plane that runs between the two parietal bones of the skull. 

Bipedal   -   Anatomical Position, Directional Term   -   Walking on two feet. 

Bipennate   -   Directional Terms, Muscle Patterns   -   Having fibers on both sides of a central tendon. 

Bipennate Plane   -   Planes and Sections, Muscular   -   A plane concerning muscles that have fibers on both sides of a central tendon. 

Bisecting Plane   -   Planes and Sections, Geometry   -   A plane that divides a structure into two equal parts. 

Bisection   -   Directional Terms, Divisions   -   The division of something into two equal or congruent parts. 

Bisectional Plane   -   Planes and Sections, Geometry   -   A plane that cuts a structure into two sections. 

Bisegmental   -   Directional Terms, Divisions   -   Involving or divided into two segments. 

Bisymmetric Plane   -   Planes and Sections, Geometry   -   A plane that divides a structure into symmetrical halves. 

Bitemporal Plane   -   Planes and Sections, Skull   -   A plane that runs between the two temporal bones of the skull. 

Biventral   -   Directional Terms, Cavities   -   Relating to two ventricles, especially of the heart. 

Biventral Plane   -   Planes and Sections, Muscular   -   A plane relating to a muscle having two bellies. 

Bladder   -   Anatomical Position, Organ   -   A hollow muscular organ that stores urine. 

Bladder Plane   -   Planes and Sections, Organs   -   A plane that divides or relates to the urinary bladder. 

Blade Plane   -   Planes and Sections, Geometry   -   A plane related to a flat, thin structure or section, often referring to a part of a bone or tool. 

Blastocyst   -   Anatomical Position, Developmental Term   -   A structure formed in early embryogenesis. 

Blastodermal Plane   -   Planes and Sections, Developmental   -   A plane dividing or related to the blastoderm, a layer of cells forming the outer layer of a blastula. 

Blastula   -   Anatomical Position, Developmental Term   -   An early stage in embryonic development. 

Blastular Plane   -   Planes and Sections, Developmental   -   A plane dividing or relating to the blastula, an early stage in embryonic development. 

Blind Plane   -   Planes and Sections, Organs   -   A plane related to a structure that is closed at one end, such as a sac or duct. 

Body   -   Anatomical Position, Structural Term   -   The main or central part of a structure, especially the body of vertebrae. 

Body Plane   -   Planes and Sections, Fundamental Concepts   -   Any plane that divides the body into sections, typically used in reference to the three primary planes: sagittal, coronal, and transverse. 

Bolus Plane   -   Planes and Sections, Digestive   -   A plane that divides or relates to a bolus, a mass of food ready for swallowing. 

Bone   -   Anatomical Position, Structural Term   -   A rigid organ that constitutes part of the vertebrate skeleton. 

Bone Marrow   -   Anatomical Position, Structural Term   -   The soft, spongy tissue in the center of bones responsible for producing blood cells. 

Bony Labyrinth   -   Anatomical Position, Structural Term   -   A complex system of cavities in the inner ear. 

Bony Plane   -   Planes and Sections, Skeletal   -   A plane that divides or relates to a bone or the bony structure. 

Bony Thorax   -   Anatomical Position, Structural Term   -   Refers to the rib cage structure, including the ribs, thoracic vertebrae, and sternum. 

Boutonnière Deformity   -   Anatomical Position, Condition Term   -   A deformity in which the finger’s middle joint bends towards the palm. 

Bowman’s Capsule   -   Anatomical Position, Structural Term   -   A cup-like sac enclosing a glomerulus, part of the kidney nephron. 

Bowman’s Gland   -   Anatomical Position, Structural Term   -   Glands in the olfactory mucosa that secrete mucus. 

Brachial   -   Anatomical Position, Directional Term   -   Relating to the arm. 

Brachial Plane   -   Planes and Sections, Limbs   -   A plane relating to the arm, especially the upper arm. 

Brachialis   -   Anatomical Position, Muscle   -   A muscle located in the upper arm, beneath the biceps brachii. 

Brachiocephalic   -   Anatomical Position, Directional Term   -   Referring to the arm and head. 

Brachiocephalic Plane   -   Planes and Sections, Vascular   -   A plane that divides or relates to the brachiocephalic vein or artery. 

Brachiocervical   -   Directional Terms, Relative Positions   -   Relating to the arm and neck. 

Brachiocrural Plane   -   Planes and Sections, Limbs   -   A plane concerning both the arm (brachio) and leg (crural) regions. 

Brachiopod Plane   -   Planes and Sections, Evolutionary   -   A plane used to describe the symmetrical halves of brachiopods, ancient marine organisms. 

Brachioradial   -   Directional Terms, Relative Positions   -   Relating to the arm and the radius bone. 

Brachycephalic   -   Directional Terms, Head Shapes   -   Having a short, wide head. 

Brachycephalic Plane   -   Planes and Sections, Cranial   -   A plane concerning the broad, short skulls, especially seen in some dog breeds. 

Brachydactyly   -   Anatomical Position, Condition Term   -   Abnormally short fingers or toes. 

Brachytherapy   -   Directional Terms, Treatment Types   -   A form of radiotherapy where a radioactive source is placed inside or next to the area requiring treatment. 

Bradycardia   -   Anatomical Position, Condition Term   -   Abnormally slow heart action. 

Brain   -   Anatomical Position, Organ   -   The main organ of the central nervous system, responsible for thought, memory, emotion, and more. 

Brainstem Plane   -   Planes and Sections, Neural   -   A plane dividing or relating to the brainstem. 

Branched Plane   -   Planes and Sections, Organs   -   A plane related to a structure that divides or has branches. 

Branchial   -   Anatomical Position, Directional Term   -   Relating to the gills or the homologous part of the anatomy in higher vertebrates. 

Branchial Plane   -   Planes and Sections, Developmental   -   A plane concerning the branchial or pharyngeal arches, structures seen in the development of vertebrates. 

Breast Plane   -   Planes and Sections, Body Regions   -   A plane that divides or concerns the breast region. 

Bregma   -   Anatomical Position, Structural Term   -   The point on the skull where the coronal and sagittal sutures intersect. 

Bregmatic   -   Directional Terms, Cranial Landmarks   -   Relating to the bregma, the junction of the coronal and sagittal sutures of the skull. 

Bregmatic Plane   -   Planes and Sections, Skull   -   A plane that passes through the bregma, the point where the coronal and sagittal sutures meet in the skull. 

Brevis   -   Directional Terms, Length   -   Referring to a muscle that is shorter than the typical muscle in that group. 

Brevity   -   Directional Terms, Length   -   Shortness or briefness. 

Broad Ligament   -   Anatomical Position, Structural Term   -   A wide fold of peritoneum that connects the sides of the uterus to the walls and floor of the pelvis. 

Broca’s Area   -   Anatomical Position, Brain Structure   -   A region in the frontal lobe of the dominant hemisphere linked to speech production. 

Bronchial   -   Directional Terms, Tubes   -   Relating to the bronchi, the main passages to the lungs. 

Bronchial Plane   -   Planes and Sections, Respiratory   -   A plane concerning the bronchi, the main passageways to the lungs. 

Bronchiolar Plane   -   Planes and Sections, Respiratory   -   A plane concerning the bronchioles, the smaller branches of the bronchi in the lungs. 

Bronchiole   -   Anatomical Position, Structural Term   -   A smaller branch of the bronchial airways in the respiratory tract. 

Bronchitis   -   Anatomical Position, Condition Term   -   Inflammation of the mucous membranes of the bronchi. 

Bronchodilator   -   Anatomical Position, Treatment Term   -   A drug that relaxes constricted airways, making breathing easier. 

Bronchus   -   Anatomical Position, Structural Term   -   A major air passage in the lungs. 

Bruxism   -   Anatomical Position, Condition Term   -   Involuntary grinding or clenching of the teeth, especially during sleep. 

Buccal   -   Anatomical Position, Directional Term   -   Pertaining to the cheek or the cheek’s inner surface. 

Buccal Plane   -   Planes and Sections, Dental   -   A plane relating to the cheek, especially inside the mouth. 

Buccinator   -   Anatomical Position, Muscle   -   A thin, flat muscle of the cheek and lips, used in blowing and sucking actions. 

Buccinator Plane   -   Planes and Sections, Muscular   -   A plane that divides or relates to the buccinator muscle in the cheek. 

Buccocervical   -   Directional Terms, Surfaces   -   Relating to the cheek and neck. 

Buccogingival   -   Directional Terms, Surfaces   -   Referring to the direction from the cheek to the gums. 

Buccolingual   -   Anatomical Position, Directional Term   -   Pertaining to the cheek and tongue. 

Bulbar   -   Anatomical Position, Directional Term   -   Pertaining to the bulb, especially referring to the medulla oblongata. 

Bulbar Plane   -   Planes and Sections, Neural   -   A plane relating to the bulb of the medulla oblongata in the brain. 

Bulbous   -   Anatomical Position, Directional Term   -   Relating to, resembling, or having a bulb; bulb-shaped. 

Bulbous Plane   -   Planes and Sections, Neural   -   A plane that divides or relates to a bulb-shaped portion of an organ or structure, especially in the nervous system. 

Bulimia   -   Anatomical Position, Condition Term   -   An eating disorder marked by episodes of overeating followed by forced vomiting or other methods to purge. 

Bulla   -   Anatomical Position, Structural Term   -   A large blister or vesicle. 

Bulla Plane   -   Planes and Sections, Skeletal   -   A plane dividing or relating to a bulla, a hollow, rounded bony structure. 

Bullar   -   Directional Terms, Cavities   -   Referring to a bony prominence or cavity, especially in the temporal bone of the skull. 

Bullous   -   Directional Terms, Structures   -   Relating to or affected by bullae (large blister-like cavities). 

Bundle Of His   -   Anatomical Position, Heart Structure   -   A collection of heart muscle cells specialized for electrical conduction, transmitting the electrical impulses from the AV node to the ventricles. 

Bunion   -   Anatomical Position, Condition Term   -   A painful swelling on the first joint of the big toe. 

Burrow   -   Directional Terms, Pathways   -   A tunnel or passage leading from the surface of the body to a deeper structure. 

Bursa   -   Anatomical Position, Structural Term   -   A fluid-filled sac that reduces friction between tissues like muscles and tendons. 

Bursa Plane   -   Planes and Sections, Joints   -   A plane that divides or relates to a bursa, a fluid-filled sac near a joint. 

Bursal   -   Directional Terms, Structures, Sacs   -   Relating to a bursa, a fluid-filled sac or saclike cavity that reduces friction. Pertaining to or resembling a bursa or bursae. 

Bursal Fluid   -   Directional Terms, Fluids   -   Fluid found within a bursa, which acts as a cushion. 

Bursal Plane   -   Planes and Sections, Joints   -   A plane related to the bursa or fluid-filled sacs that reduce friction in the joints. 

Bursitis   -   Anatomical Position, Condition Term   -   Inflammation of a bursa, often causing joint pain. 

Buttock Plane   -   Planes and Sections, Body Regions   -   A plane that divides or relates to the region of the body’s buttocks. 

C

Calcaneal   -   Directional Terms, Bone Projections   -   Pertaining to the heel bone or heel. 

Calcaneocuboid Plane   -   Planes and Sections, Foot   -   A plane related to the joint between the calcaneus and cuboid bones of the foot. 

Calcaneus   -   Anatomical Position, Bone   -   The large bone forming the heel. 

Calcarine Plane   -   Planes and Sections, Neural   -   A plane that divides or relates to the calcarine sulcus in the occipital lobe of the brain. 

Calcification   -   Anatomical Position, Condition Term   -   Accumulation of calcium salts in a body tissue. 

Calcitonin   -   Anatomical Position, Hormone   -   A hormone produced by the thyroid, involved in regulating calcium levels. 

Calvarial   -   Directional Terms, Skull Parts   -   Referring to the upper dome-shaped part of the skull. 

Calvarial Plane   -   Planes and Sections, Skull   -   A plane dividing or relating to the calvaria, the upper domed part of the skull. 

Canalicular Plane   -   Planes and Sections, Organs   -   A plane dividing or concerning a canalicular structure or tiny canal within an organ. 

Cancellous   -   Directional Terms, Bone Types   -   Referring to spongy bone. 

Canthal   -   Directional Terms, Eye Corners   -   Relating to the angles or corners of the eye. 

Canthal Plane   -   Planes and Sections, Facial   -   A plane related to the canthus, the angle where the upper and lower eyelids meet. 

Capillary   -   Anatomical Position, Blood Vessel   -   The smallest blood vessels where oxygen and nutrients are exchanged between blood and tissues. 

Capitate   -   Directional Terms, Shapes   -   Having a head; head-shaped. 

Capitulum   -   Directional Terms, Bone Projections   -   A small, rounded articular head. 

Capsular   -   Directional Terms, Coverings   -   Referring to a capsule or a protective covering. 

Capsular Plane   -   Planes and Sections, Joints   -   A plane concerning the fibrous capsule of a joint. 

Cardinal Plane   -   Planes and Sections, Obstetrics   -   Refers to any of the three orthogonal planes in the pelvis, especially relevant during childbirth. 

Cardiothoracic Plane   -   Planes and Sections, Thoracic   -   A plane dividing or concerning the region where the heart and thorax coexist. 

Carina   -   Anatomical Position, Structural Term   -   A ridge or bifurcation in the trachea. 

Carinal   -   Directional Terms, Ridge-Like Structures   -   Referring to a ridge or a keel-like structure, especially in the trachea. 

Carotid   -   Anatomical Position, Blood Vessel   -   Major arteries in the neck that supply blood to the brain. 

Carpal   -   Anatomical Position, Bone   -   The bones of the wrist. 

Carpal Plane   -   Planes and Sections, Limbs   -   A plane dividing or relating to the carpal bones in the wrist. 

Carpometacarpal Plane   -   Planes and Sections, Limbs   -   A plane concerning the joint between the carpus and metacarpus in the hand. 

Cartilage   -   Anatomical Position, Structural Term   -   A flexible connective tissue found in many parts of the body. 

Caudal   -   Anatomical Position, Directional Term   -   Toward the tail or posterior end of the body. 

Caudal Plane   -   Planes and Sections, Directional Reference   -   A plane that is oriented toward the tail or posterior end of the body. 

Caudorostral   -   Directional Terms, Relative Positions   -   From the tail end to the snout or beak. 

Cavernous Plane   -   Planes and Sections, Vascular   -   A plane dividing or related to the cavernous sinus, a blood-filled space located on either side of the pituitary gland. 

Celiac Plane   -   Planes and Sections, Abdominal   -   A plane dividing or related to the celiac trunk, a major branch of the abdominal aorta. 

Central   -   Directional Terms, Relative Positions   -   Situated in the center. 

Central Plane   -   Planes and Sections, Fundamental Concepts   -   A plane that passes through the center of an organ or structure. 

Centrifugal   -   Directional Terms, Movements   -   Moving or directed away from a center or axis. 

Centripetal   -   Directional Terms, Movements   -   Moving or directed toward a center or axis. 

Centromedian   -   Directional Terms, Central Positions   -   Situated in the center or median line. 

Cephalic   -   Anatomical Position, Directional Term   -   At or near the head end of the body. 

Cephalic Plane   -   Planes and Sections, Directional Reference   -   A plane concerning the head or the direction towards the head. 

Cephalocaudal   -   Directional Terms, Development Directions   -   From head to tail, used to describe the direction of the growth and differentiation gradient in embryos. 

Cephalocaudal Plane   -   Planes and Sections, Directional Reference   -   A plane running from the head (cephalic) to the tail (caudal) of an organism. 

Cephalometric Plane   -   Planes and Sections, Cranial   -   A plane used in cephalometry, the study and measurement of the head and face, especially in orthodontics. 

Cephalo-Occipital Plane   -   Planes and Sections, Cranial   -   A plane related to the region between the main portion of the head and the occipital bone. 

Cephalopelvic Plane   -   Planes and Sections, Obstetrics   -   A plane used in childbirth to describe the relationship between the fetal head and maternal pelvis. 

Cerebellar Plane   -   Planes and Sections, Neural   -   A plane dividing or relating to the cerebellum, a part of the brain responsible for coordination and balance. 

Cerebellum   -   Anatomical Position, Brain Structure   -   The part of the brain responsible for balance and coordination. 

Cerebrum   -   Anatomical Position, Brain Structure   -   The largest part of the brain, responsible for higher cognitive functions. 

Cervical   -   Anatomical Position, Directional Term   -   Referring to the neck or the cervical vertebrae. 

Cervical Plane   -   Planes and Sections, Spinal   -   A plane related to the cervical region or neck portion of the spine. 

Cervicofacial Plane   -   Planes and Sections, Facial   -   A plane dividing or concerning the region between the neck (cervical) and the face. 

Cervicomedullary Plane   -   Planes and Sections, Neural   -   A plane concerning the junction of the cervical spinal cord and the medulla oblongata. 

Cervico-Occipital Plane   -   Planes and Sections, Cranial   -   A plane concerning the region between the cervical part of the spine and the occipital bone of the skull. 

Cervicotemporal Plane   -   Planes and Sections, Cranial   -   A plane concerning the region between the neck (cervical) and the temples of the skull. 

Cervicothoracic   -   Directional Terms, Spinal Regions   -   Relating to the region where the cervical spine meets the thoracic spine. 

Cervicothoracic Plane   -   Planes and Sections, Spinal   -   A plane concerning the region where the cervical and thoracic parts of the spine meet. 

Cervix   -   Anatomical Position, Organ   -   The lower, narrow end of the uterus that leads into the vagina. 

Cholangiogram   -   Anatomical Position, Diagnostic Procedure   -   An X-ray of the bile ducts. 

Cholecystectomy   -   Anatomical Position, Surgical Procedure   -   Surgical removal of the gallbladder. 

Cholecystitis   -   Anatomical Position, Condition Term   -   Inflammation of the gallbladder. 

Chondral   -   Directional Terms, Tissue Types   -   Relating to cartilage. 

Chondrocyte   -   Anatomical Position, Cell Type   -   A cell that produces and maintains cartilage. 

Chordae Tendineae   -   Anatomical Position, Heart Structure   -   Tendinous strands in the heart connecting the papillary muscles to the tricuspid and mitral valves. 

Chorionic Villus   -   Anatomical Position, Fetal Structure   -   Tiny hair-like structures in the placenta, important for exchanging nutrients and wastes between the mother and fetus. 

Choroid   -   Anatomical Position, Eye Structure   -   The vascular layer of the eye, between the retina and the sclera. 

Choroidal Plane   -   Planes and Sections, Ocular   -   A plane dividing or related to the choroid, a vascular layer of the eye. 

Chyme   -   Anatomical Position, Digestive Fluid   -   The pulpy, acidic fluid that passes from the stomach to the small intestine. 

Ciliary   -   Anatomical Position, Eye Structure   -   Relating to the ciliary body or the cilia. 

Cingulate   -   Directional Terms, Brain Regions   -   Relating to a part of the brain (cingulate gyrus) situated in the medial aspect of the cerebral cortex. 

Circumduction   -   Anatomical Position, Movement   -   A circular movement of a limb or the eye. 

Circumferential   -   Directional Terms, Surroundings   -   Surrounding or being around the perimeter. 

Circumferential Plane   -   Planes and Sections, Geometry   -   A plane concerning the entire boundary of an object, especially in cylindrical structures. 

Circumhorizontal Plane   -   Planes and Sections, Geometry   -   A plane that lies perpendicular to the vertical axis, especially in cylindrical structures. 

Circumoral   -   Directional Terms, Surroundings   -   Situated or appearing around the mouth. 

Circumventricular   -   Directional Terms, Surrounding Structures   -   Surrounding a ventricle, especially in the brain. 

Cistern   -   Anatomical Position, Fluid Space   -   A reservoir or space that holds liquids, such as cerebrospinal fluid in the brain. 

Cisternal   -   Directional Terms, Fluid-Filled Cavities   -   Relating to a cistern, especially those in the brain where cerebrospinal fluid is found. 

Clavicle   -   Anatomical Position, Bone   -   The collarbone, connecting the breastbone to the shoulder. 

Clavicular   -   Directional Terms, Bone Positions   -   Referring to the clavicle or collarbone. 

Clavicular Plane   -   Planes and Sections, Skeletal   -   A plane related to the clavicle or collarbone. 

Claviculopectoral Plane   -   Planes and Sections, Thoracic   -   A plane between the clavicle and pectoralis major muscle. 

Clitoral   -   Directional Terms, Genital Structures   -   Relating to the clitoris. 

Clitoral Plane   -   Planes and Sections, Reproductive   -   A plane that divides or relates to the clitoris. 

Clot   -   Anatomical Position, Blood   -   A thickened mass of coagulated blood. 

Coccygeal Plane   -   Planes and Sections, Spinal   -   A plane related to the coccyx or tailbone. 

Coccyx   -   Anatomical Position, Bone   -   The small, triangular bone at the base of the spinal column; commonly known as the tailbone. 

Cochlea   -   Anatomical Position, Ear Structure   -   The spiral cavity in the inner ear, responsible for hearing. 

Cochlear   -   Directional Terms, Ear Parts   -   Pertaining to the cochlea, the spiral cavity of the inner ear. 

Collagen   -   Anatomical Position, Protein   -   The main structural protein found in skin and other connective tissues. 

Collateral   -   Directional Terms, Branches, Vessels   -   Situated at the side; accompanying; subsidiary. 

Columellar Plane   -   Planes and Sections, Facial   -   A plane concerning the columella, the external end of the nasal septum. 

Commissural   -   Directional Terms, Connecting Fibers   -   Relating to nerve fibers that connect one side of the brain or spinal cord with the other. 

Commissural Plane   -   Planes and Sections, Neural   -   A plane dividing or concerning the neural pathways connecting corresponding regions of the two cerebral hemispheres. 

Commissure   -   Anatomical Position, Structural Term   -   A location where adjacent structures touch or are connected, such as the joining of two cerebral hemispheres. 

Conchoidal   -   Directional Terms, Shapes   -   Having a shell-like shape. 

Condylar   -   Directional Terms, Bone Processes   -   Referring to a rounded bony projection. 

Condylar Plane   -   Planes and Sections, Joints   -   A plane related to a condyle, a rounded prominence at the end of a bone. 

Condylobasal Plane   -   Planes and Sections, Cranial   -   A plane related to the length from the anterior point on the mandible to the most posterior point on the occipital condyles. 

Condyloid   -   Directional Terms, Joints   -   A joint that allows movement in two planes, such as the wrist. 

Conjugate Plane   -   Planes and Sections, Obstetrics   -   A plane referring to the anteroposterior diameter of the pelvic inlet, particularly important in childbirth. 

Conjunctiva   -   Anatomical Position, Eye Structure   -   A thin, transparent tissue covering the outer surface of the eye. 

Connective Tissue   -   Anatomical Position, Tissue Type   -   Tissue that supports, connects, or separates different types of tissues and organs. 

Conoidal Plane   -   Planes and Sections, Geometry   -   A plane related to a cone-shaped structure or section. 

Contraction   -   Anatomical Position, Muscle Movement, Movement   -   The process where a muscle becomes or is made shorter and tighter. The shortening and thickening of a functioning muscle or muscle fiber. 

Contraflexure   -   Directional Terms, Bends   -   A bend or fold in the opposite direction. 

Contralateral   -   Directional Terms, Relative Positions   -   On the opposite side of the body. 

Conus Medullaris   -   Anatomical Position, Spinal Structure   -   The tapered end of the spinal cord. 

Coracoclavicular Plane   -   Planes and Sections, Skeletal   -   A plane related to the ligamentous connection between the coracoid process and the clavicle. 

Coracoid   -   Anatomical Position, Bone Feature   -   A small hook-like structure on the lateral edge of the superior anterior portion of the scapula. 

Coracoid Plane   -   Planes and Sections, Skeletal   -   A plane concerning the coracoid process, a bony prominence on the scapula. 

Cornea   -   Anatomical Position, Eye Structure   -   The transparent layer at the front of the eye. 

Corneal   -   Directional Terms, Eye Surfaces   -   Relating to the cornea of the eye. 

Corneal Plane   -   Planes and Sections, Ocular   -   A plane dividing or concerning the cornea of the eye. 

Corniculate   -   Directional Terms, Cartilages   -   Referring to horn-shaped cartilages, especially of the larynx. 

Cornual   -   Directional Terms, Horn-Shaped Structures   -   Referring to a horn or horn-shaped part. 

Coronal Plane   -   Directional Terms, Planes And Sections   -   A vertical plane that divides the body into anterior (front) and posterior (back) parts. 

Coronary   -   Anatomical Position, Directional Term   -   Relating to the heart, specifically the vessels supplying the heart muscle. 

Coronary Sinus   -   Anatomical Position, Heart Structure   -   A vein collecting blood from the myocardium of the heart. 

Coronoid   -   Anatomical Position, Bone Feature   -   A beak-like process or prominence of a bone. 

Corpus Callosum   -   Anatomical Position, Brain Structure   -   A broad band of nerve fibers that connects the two hemispheres of the brain. 

Corrugator   -   Directional Terms, Muscles   -   A muscle that wrinkles or corrugates a surface, like the corrugator supercilii muscle of the eyebrow. 

Cortical   -   Directional Terms, Layers   -   Referring to the outer layer of an organ or structure, such as the cerebral cortex. 

Cortical Plane   -   Planes and Sections, Neural   -   A plane that divides or is related to the cerebral cortex in the brain. 

Corticomedullary   -   Directional Terms, Tissue Layers   -   Relating to both the cortex and medulla of an organ, especially the kidney. 

Cortico-Medullary Plane   -   Planes and Sections, Organs   -   A plane that divides or relates to the boundary between the cortex and medulla of an organ, especially the kidneys. 

Cortisol   -   Anatomical