Neuroanatomy — Flashcards

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

Answer: Cerebellum

Flashcard 532: Horner syndrome is associated with lesions of the spinal cord above _____

Answer: T1

Flashcard 533: Which cranial nerve decussates prior to exiting the brainstem? _____

Answer: CN IV (Trochlear)

Flashcard 534: 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 535: Which type of sensory receptor is found on deep skin layers, ligaments, and joints? _____

Answer: Pacinian corpuscles

Flashcard 536: The 1st-order neurons of the dorsal column-medial lemniscal tract are sensory nerve endings with cell bodies located in a _____

Answer: DRG

Flashcard 537: Which midline structure of the epithalamus secretes melatonin and often appears calcified on CT scans?

Answer: Pineal gland

Flashcard 538: Do meningiomas typically invade the cortex? _____

Answer: No (external to brain parenchyma)

Flashcard 539: 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 540: Corticotropin-releasing hormone (CRH) is secreted by cells of the _____ nuclei of the hypothalamus

Answer: paraventricular