Neuroanatomy — Flashcards

Flashcard 481: Lesions of the cochlear part of CN VIII or cochlear nuclei result in profound _____-lateral (uni- or bilateral) sensorineural hearing loss

Answer: uni

Flashcard 482: _____ are mural cells that wrap around endothelial cells and contribute to the blood-brain barrier

Answer: Pericytes

Flashcard 483: What cells synthesize the myelin for cranial nerve I?_____

Answer: None

Flashcard 484: What structure is formed by the decussation of internal arcuate fibers in the medulla and carries fine touch, vibration, and proprioception to the VPL nucleus of the thalamus?

Answer: Medial lemniscus

Extra: The medial lemniscus represents the second-order neurons of the dorsal column-medial lemniscus (DCML) system. These neurons originate in the nucleus gracilis and nucleus cuneatus, cross the midline as internal arcuate fibers in the medulla, and ascend to the ventral posterolateral (VPL) nucleus of the thalamus.

Flashcard 485: Which type of glial cell is a derivative of mononuclear phagocytes?_____

Answer: Microglia

Flashcard 486: Which thalamic nuclei (2) receive motor input from the basal ganglia and cerebellum? _____

Answer: Ventral anterior (VA) / Ventral lateral (VL)

Flashcard 487: All the axons in the cochlear part of CN VIII enter the _____ junction and synapse in the ventral and dorsal cochlear nuclei

Answer: pontomedullary

Flashcard 488: Identify the cortical area located in the posterior part of the superior temporal gyrus (Brodmann area 22).

Answer: Wernicke's area

Extra: Wernicke's area is responsible for the comprehension of language. It is located in the posterior part of the superior temporal gyrus of the dominant hemisphere.

Flashcard 489: Lesions of the _____ cerebellum (medial or lateral) may result in nystagmus and head tilting

Answer: medial

Flashcard 490: Where does VZV remain latent?_____

Answer: DRG