Neuroanatomy — Flashcards

Flashcard 401: Colloid cysts are a pathologically benign tumor usually found in the _____

Answer: 3rd ventricle

Flashcard 402: The nucleus _____ supplies motor innervation of the pharynx, larynx, and upper esophagus (e.g. swallowing, palate elevation)

Answer: ambiguus

Flashcard 403: What syndrome is associated with a lesion of the following areas? 1. Corticospinal tract 2. Medial lemniscus 3. Abducens nerve (CN VI)

Answer: Medial pontine syndrome (Middle alternating hemiplegia)

Flashcard 404: What dermatome is found at the high turtleneck shirt level? _____

Answer: C3

Flashcard 405: The _____ nucleus sends parasympathetic fibers to the heart, lungs, and upper GI tract

Answer: dorsal motor

Flashcard 406: Which cranial nerve is responsible for the afferent limb of the corneal reflex? _____

Answer: CN V1 (nasociliary br. of ophthalmic)

Flashcard 407: What dermatome is found at the posterior half of the skull? _____

Answer: C2

Flashcard 408: Which cranial nerve is responsible for the efferent limb of the lacrimation reflex? _____

Answer: CN VII

Flashcard 409: 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 410: Which thalamic nucleus receives auditory input from the inferior colliculus and superior olive? _____

Answer: Medial geniculate body (MGB)