KEYWORDS

choke---in horses, obstruction of the esophagus; in people, obstruction of the windpipe (trachea).

corpora nigra---irregular, awning-like projection of the eye’s iris, suspended over the upper edge of the pupil to shield the retina from excessive light.

cortisol (hydrocortisone)---adrenal hormone regulating fat and water metabolism, muscle tone, nerve stimulation and inflammation.

curve of Spee---natural, slight arc in the occlusal (chewing) surface of the molars.