Neuroanatomy — Flashcards

Flashcard 421: Which nucleus receives pain and temperature sensation from the face and extends from the pons into the upper cervical spinal cord?

Answer: Spinal trigeminal nucleus

Extra: The spinal trigeminal nucleus receives pain and temperature information from the face (CN V) as well as CN VII, IX, and X. It extends from the pons through the medulla to the upper cervical spinal cord.

Flashcard 422: 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 423: What protein is used as an astrocyte marker? _____

Answer: GFAP (glial fibrillary acidic protein)

Flashcard 424: The dorsal spinocerebellar and cuneocerebellar tracts enter the cerebellum via the _____

Answer: inferior cerebellar peduncle

Flashcard 425: Ependymal cells have _____, which helps circulate CSF

Answer: cilia

Flashcard 426: The rootlets of CN _____ exit between the olive and medullary pyramid

Answer: XII

Flashcard 427: The only axons that leave the cerebellar cortex are those of _____ cells

Answer: Purkinje

Flashcard 428: Which sulcus separates the frontal lobe from the parietal lobe?

Answer: Central sulcus (Sulcus of Rolando)

Extra: The central sulcus separates the **frontal lobe** (precentral gyrus/motor cortex) from the **parietal lobe** (postcentral gyrus/sensory cortex).

Flashcard 429: Lesions of the dorsal column-medial lemniscus tract in the thalamus and cerebral cortex present on the _____-lateral side below the lesion

Answer: contra

Flashcard 430: Which thalamic nucleus receives visual input from CN II? _____

Answer: Lateral geniculate body (LGB)