Neuroanatomy — Flashcards

Flashcard 531: What part of the brain is most often affected by hemangioblastoma? _____

Answer: Cerebellum

Flashcard 532: The 2nd-order neuron of the hypothalamospinal tract arises from the lateral horn of T1 and synapses on the _____

Answer: superior cervical ganglion

Flashcard 533: Which sacral nerves carry parasympathetics? _____

Answer: S2 - S4

Flashcard 534: The 1st-order neurons of the dorsal column-medial lemniscal tract are sensory nerve endings with cell bodies located in a _____

Answer: DRG

Flashcard 535: Which cranial nerve mediates the efferent limb of the gag reflex and provides parasympathetic innervation to the heart and lungs?

Answer: CN X (Vagus nerve)

Extra: The afferent limb of the gag reflex is mediated by CN IX (Glossopharyngeal nerve). CN X exits the skull via the jugular foramen along with CN IX and CN XI.

Flashcard 536: Horner syndrome is associated with lesions of the spinal cord above _____

Answer: T1

Flashcard 537: Uncal herniation involves displacement of the medial temporal lobe (uncus) under the _____

Answer: tentorium cerebelli

Flashcard 538: Which cranial nerve (and branch) is responsible for the efferent limb of the corneal reflex? _____

Answer: Bilateral CN VII (temporal br. via orbicularis oculi)

Flashcard 539: Which spinal cord level is characterized by large ventral horns and a high ratio of gray matter to white matter?

Answer: Lumbar

Flashcard 540: Which midline structure of the epithalamus secretes melatonin and often appears calcified on CT scans?

Answer: Pineal gland