external auditory foramen n.
See external acoustic pore.
noun, Anatomy. 1. the canal extending from the opening in the external ear to the tympanic membrane.
- External capsule
external capsule n. A thin lamina of white substance in the brain that separates the claustrum from the putamen.
- External carotid nerve
external carotid nerve n. Any of the sympathetic nerve fibers extending upward from the superior cervical ganglion along the external carotid artery, forming the external carotid plexus.
- External carotid plexus
external carotid plexus n. An autonomic plexus that is formed by the external carotid nerves, surrounds the external carotid artery, and gives origin to a number of secondary plexuses along the branches of the external carotid artery.