Neuroanatomy — Flashcards

Flashcard 411: Which cranial nerve is responsible for the efferent limb of the lacrimation reflex? _____

Answer: CN VII

Flashcard 412: The trophozoite form of Naegleria fowleri infects the CNS by passing through the _____

Answer: cribriform plate

Flashcard 413: _____ help maintain the blood-brain-barrier via foot processes

Answer: Astrocytes

Flashcard 414: Which cranial nerve provides sensory innervation to the face and motor innervation to the muscles of mastication?

Answer: CN V (Trigeminal nerve)

Flashcard 415: The 1st-order neurons of the spinothalamic tract are sensory nerve endings with cell bodies located in a _____

Answer: DRG

Flashcard 416: Both dorsal columns (fasciculus gracilis and fasciculus cuneatus) are present at and above which spinal level?

Answer: T6

Extra: The fasciculus gracilis is present at all spinal levels (carrying sensation from the lower limbs), while the fasciculus cuneatus begins only at the T6 level (carrying sensation from the upper limbs). Therefore, both dorsal columns are present only at and above the level of T6.

Flashcard 417: What gyrus is located immediately superior to the corpus callosum?

Answer: Cingulate gyrus

Flashcard 418: Lesions to the frontal eye fields result in eyes that look _____ the side of the lesion

Answer: towards

Flashcard 419: What protein is used as an astrocyte marker? _____

Answer: GFAP (glial fibrillary acidic protein)

Flashcard 420: Which nucleus receives pain and temperature sensation from the face and extends from the pons into the upper cervical spinal cord?

Answer: Spinal trigeminal nucleus

Extra: The spinal trigeminal nucleus receives pain and temperature information from the face (CN V) as well as CN VII, IX, and X. It extends from the pons through the medulla to the upper cervical spinal cord.