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111coronary artery — Anat. either of two arteries that originate in the aorta and supply the heart muscle with blood. See illus. under heart. [1735 45; so called from its crownlike envelopment of the heart] * * * ▪ anatomy one of two blood vessels that branch… …
112coronary sinus — Anat. a large venous channel in the heart wall that receives blood via the coronary veins and empties into the right atrium. [1825 35] * * * …
113coronary vein — Anat. any of several veins that receive blood from the heart wall and empty into the coronary sinus. [1825 35; see CORONARY ARTERY] * * * …
114cranial nerve — Anat. any of the nerves arising from the brainstem and exiting to the periphery of the head through skull openings, including 10 pairs in fish and amphibians and 12 pairs in reptiles, birds, and mammals: in humans, these are the abducens nerve,… …
115crystalline lens — Anat. a doubly convex, transparent body in the eye, situated behind the iris, that focuses incident light on the retina. See diag. under eye. [1785 95] * * * …
116ejaculatory duct — Anat. a canal through which semen is ejaculated: in human males, the canal that passes from the seminal vesicle and vas deferens, conveying semen to the urethra. [1745 55] * * * ▪ anatomy either of two hollow tubes, each formed by union of… …
117elastic tissue — Anat. connective tissue consisting chiefly of yellow, elastic fibers and composing certain ligaments and the walls of the arteries. [1860 65] * * * …
118end bulb — Anat. any of various types of oval or rounded structures occurring at the ends of nerve fibers, ranging from slight enlargements to complex corpuscles that act as sensory receptors for pain, touch, cold, etc. * * * …
119external auditory meatus — Anat. the canal extending from the opening in the external ear to the tympanic membrane. * * * …
120external iliac artery — Anat. See iliac artery (def. 2). * * * …
