Neuroanatomy — Flashcards

Flashcard 371: Which layer of the six-layered neocortex contains cell bodies of neurons that form the corticospinal and corticobulbar tracts? _____

Answer: Internal pyramidal layer (layer V)

Flashcard 372: What visual deficit results from a lesion of Meyer's loop (e.g. temporal lesion, MCA occlusion)? _____

Answer: Contralateral homonymous superior quadrantanopia ("pie in the sky")

Flashcard 373: The cilia on the hair cells of the semicircular canal are embedded in a gelatinous structure called the _____

Answer: cupula

Flashcard 374: Medulloblastomas grow rapidly and spread via _____

Answer: CSF

Flashcard 375: Which cranial nerve is responsible for the afferent limb of the lacrimation reflex? _____

Answer: CN V1

Flashcard 376: The central axons from the spiral ganglion form the _____ part of CN VIII

Answer: cochlear

Flashcard 377: The _____ ganglion contains cell bodies whose peripheral axons innervate hair cells of the organ of Corti

Answer: spiral

Flashcard 378: Which sulcus on the medial surface of the occipital lobe contains the primary visual cortex?

Answer: Calcarine sulcus

Extra: The primary visual cortex (Brodmann area 17) is located in the walls and floor of the calcarine sulcus. It separates the cuneus (superiorly) from the lingual gyrus (inferiorly).

Flashcard 379: The axons of the nucleus gracilis and cuneatus are termed _____ fibers before decussating

Answer: internal arcuate

Flashcard 380: Degeneration of the neurons of the _____ leads to dementia (e.g. Alzheimer's)

Answer: cerebral cortex