Neuroanatomy — Flashcards

Flashcard 411: Which brainstem tract coordinates conjugate horizontal eye movements by connecting the nuclei of CN VI and the contralateral CN III?

Answer: Medial longitudinal fasciculus (MLF)

Extra: The MLF coordinates conjugate horizontal eye movements by connecting the abducens nucleus (CN VI) to the contralateral oculomotor nucleus (CN III). Damage to the MLF results in Internuclear Ophthalmoplegia (INO), which is highly characteristic of Multiple Sclerosis.

Flashcard 412: Which cranial nerve is responsible for the efferent limb of the lacrimation reflex? _____

Answer: CN VII

Flashcard 413: The _____ nucleus sends parasympathetic fibers to the heart, lungs, and upper GI tract

Answer: dorsal motor

Flashcard 414: The 2nd-order neurons of trigeminal nerve nuclei synapse in the _____ nucleus of the thalamus

Answer: ventral posteromedial (VPM)

Flashcard 415: 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 416: Lesions to the frontal eye fields result in eyes that look _____ the side of the lesion

Answer: towards

Flashcard 417: 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 418: Ependymal cells have _____, which helps circulate CSF

Answer: cilia

Flashcard 419: What protein is used as an astrocyte marker? _____

Answer: GFAP (glial fibrillary acidic protein)

Flashcard 420: The dorsal spinocerebellar and cuneocerebellar tracts enter the cerebellum via the _____

Answer: inferior cerebellar peduncle