Brain and Neuroanatomy — Flashcards

Flashcard 71: The _____ cistern contains the AICA artery, cranial nerves 5, 7, 8 and superior petrosal veins

Answer: Cerebellopontine

Flashcard 72: _____ sinus and superior sagittal sinus drain into the confluence of sinuses

Answer: Occipital

Flashcard 73: The auditory input from the superior olivary nucleus travels via the _____ to the inferior colliculus (midbrain)

Answer: lateral lemniscus

Flashcard 74: Lesion to areas after the optic chiasm result in _____-ocular and homonymous contra-lateral deficits in vision

Answer: bin

Flashcard 75: The basal ganglia and cerebellum funnel information for skilled voluntary movement to the _____ and motor cortex by way of the thalamus.

Answer: premotor

Flashcard 76: In **Polysomnography**, continuous EEG monitoring is recorded from _____, Central, and Occipital leads attached to the scalp.

Answer: Frontal

Extra: According to AASM (American Academy of Sleep Medicine) guidelines, the recommended EEG derivations for sleep staging include Frontal (F4-M1), Central (C4-M1), and Occipital (O2-M1) electrodes. These are non-invasive electrodes attached to the scalp, not the brain. - **Occipital leads:** Best for identifying alpha rhythm (eyes closed wakefulness). - **Central leads:** Best for identifying sleep spindles and K-complexes (Stage N2). - **Frontal leads:** Best for identifying slow-wave activity (Stage N3).

Flashcard 77: _____ pupillae is supplied by the parasympathetic fibers of the ciliary ganglion

Answer: Sphincter

Flashcard 78: The innervation of the cranial dura mater is derived mainly from the three divisions of the _____ cranial nerve, the C2 and C3 spinal nerves, and the cervical sympathetic trunk.

Answer: 5th

Flashcard 79: The infraorbital nerve is a continuation of the _____ nerve that runs across the orbital floor

Answer: maxillary

Flashcard 80: The abducens nucleus sends axons that course within the contralateral _____ to reach the oculomotor nucleus

Answer: MLF