Neuroanatomy — Flashcards

Flashcard 441: Which cranial nerve provides somatosensation to the posterior 1/3rd of the tongue? Where else does this nerve provide innervation?

Answer: Glossopharyngeal nerve (CN IX) Also provides: - Taste (posterior 1/3rd) - Motor (Stylopharyngeus muscle) - Parasympathetic (Parotid gland) - Sensory (Oropharynx, carotid sinus/body, middle ear)

Flashcard 442: Strokes involving the lenticulostriate artery typically involve the _____ and internal capsule

Answer: striatum

Flashcard 443: Name the white matter tract located between the apex of the dorsal horn and the surface of the spinal cord that carries primary afferent fibers for pain and temperature.

Answer: Lissauer's tract (posterolateral tract)

Extra: Fibers in Lissauer's tract (primarily A-delta and C fibers) typically ascend or descend one or two spinal segments before synapsing in the substantia gelatinosa (Lamina II) of the dorsal horn.

Flashcard 444: The corticobulbar innervation of cranial nerve lower motoneurons is predominantly _____-lateral

Answer: bi

Flashcard 445: _____ aphasia is caused by damage to Broca's area, Wernicke's area, and the arcuate fasciculus

Answer: Global

Flashcard 446: Light reflex: Light in either retina sends a signal via CN II to the _____ nuclei

Answer: pretectal

Flashcard 447: The auditory information from the medial geniculate body projects to the _____ of the superior temporal gyrus

Answer: primary auditory cortex

Flashcard 448: Lesion to which artery affects the nucleus ambiguus? _____

Answer: Posterior inferior cerebellar artery (PICA)

Flashcard 449: Do dorsal rami of spinal nerves contain sensory or motor neurons? _____

Answer: Both

Flashcard 450: What does Brodmann area 3, 1, 2 refer to? _____

Answer: Primary somatosensory cortex