Neuroanatomy — Flashcards

Flashcard 541: Which midline structure of the epithalamus secretes melatonin and often appears calcified on CT scans?

Answer: Pineal gland

Flashcard 542: Corticotropin-releasing hormone (CRH) is secreted by cells of the _____ nuclei of the hypothalamus

Answer: paraventricular

Flashcard 543: Which spinal cord level is characterized by large ventral horns and a high ratio of gray matter to white matter?

Answer: Lumbar

Flashcard 544: 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 545: Do meningiomas typically invade the cortex? _____

Answer: No (external to brain parenchyma)

Flashcard 546: Which wedge-shaped gyrus on the medial surface of the occipital lobe is bounded by the parieto-occipital sulcus superiorly and the calcarine sulcus inferiorly?

Answer: Cuneus gyrus

Flashcard 547: Which cranial nerve arises from the dorsal aspect of the midbrain?

Answer: Trochlear nerve (CN IV)

Extra: The trochlear nerve (CN IV) is the only cranial nerve to emerge from the dorsal aspect of the brainstem (specifically the midbrain, just below the inferior colliculus).

Flashcard 548: The confluence of sinuses drain into _____ sinuses

Answer: transverse

Flashcard 549: Which dural venous sinus is the main location of CSF return via arachnoid granulations? _____

Answer: Superior sagittal sinus

Flashcard 550: Which cranial nerve provides somatosensation to the anterior 2/3rds of the tongue? _____

Answer: Mandibular branch of trigeminal (V3) (specific)