Brain and Neuroanatomy — Flashcards

Flashcard 241: The _____ is the gelatinous component of the crista ampullaris that extends from the crista to the roof of the ampullae.

Answer: cupula

Flashcard 242: The lowest projection of ligamentum denticulatum lies at the level of _____ - L1 spinal nerves.

Answer: T12

Flashcard 243: The 3rd ventricle drains into the _____ via the cerebral aqueduct (of Sylvius)

Answer: 4th ventricle

Flashcard 244: Each semicircular canal has 2 ends: ampullated & non-ampullated which open into _____.

Answer: vestibule

Flashcard 245: The _____ nerve passing through the jugular foramen has a separate canal.

Answer: glossopharyngeal

Flashcard 246: General/Special Visceral Afferent: Cranial Nerves _____

Answer: 7,9,10

Flashcard 247: The third order neurons of the _____-spinothalamic pathway project to somatosensory cortex

Answer: neo

Flashcard 248: Relations of the Thalamus:Laterally, it is related to the posterior limb of the _____

Answer: internal capsule

Flashcard 249: All muscles of the tongue except the palatoglossus are supplied by the _____ nerve.

Answer: Hypoglossal (CN XII)

Extra: The palatoglossus muscle is the only muscle of the tongue NOT supplied by the hypoglossal nerve; it is supplied by the pharyngeal plexus (Vagus nerve/CN X). **Muscles of the tongue:** 1. **Intrinsic:** Superior longitudinal, inferior longitudinal, transverse, and vertical (all CN XII). 2. **Extrinsic:** Genioglossus, hyoglossus, styloglossus (all CN XII), and palatoglossus (CN X).

Flashcard 250: Unilateral trigeminal nerve compression can be due to _____ artery

Answer: superior cerebellar