Neuroanatomy — Flashcards

Flashcard 421: Identify the cortical area located in the **Heschl's gyri** (transverse temporal gyri):

Answer: Primary auditory cortex (Brodmann areas 41 and 42)

Extra: Heschl's gyri (transverse temporal gyri) are located within the superior temporal gyrus.

Flashcard 422: The rootlets of CN _____ exit between the olive and medullary pyramid

Answer: XII

Flashcard 423: The 2nd-order neurons of trigeminal nerve nuclei synapse in the _____ nucleus of the thalamus

Answer: ventral posteromedial (VPM)

Flashcard 424: 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 425: The motor/sensory areas corresponding to the face are located in the _____ aspects of the pre-/post-central gyri (medial or lateral)

Answer: lateral

Flashcard 426: Which cranial nerve provides sensory innervation to the face and motor innervation to the muscles of mastication?

Answer: CN V (Trigeminal nerve)

Flashcard 427: Identify the cranial nerve that provides motor innervation to the stylopharyngeus muscle and taste to the posterior 1/3 of the tongue.

Answer: CN IX (Glossopharyngeal nerve)

Flashcard 428: LMN lesions cause _____-lateral flaccid paralysis at the level of the lesion

Answer: ipsi

Flashcard 429: Which thalamic nucleus receives visual input from CN II? _____

Answer: Lateral geniculate body (LGB)

Flashcard 430: The only axons that leave the cerebellar cortex are those of _____ cells

Answer: Purkinje