Neuroanatomy — Flashcards

Flashcard 391: Rules of 4: Lesions in the brain stem that affect the motor nuclei or nerves typically result in _____-lateral loss of the affected nerve

Answer: ipsi

Flashcard 392: The inferior colliculus sends auditory information to the _____ of the thalamus

Answer: medial geniculate body

Flashcard 393: Identify the spinal cord level based on these histological features: oval shape, largest amount of white matter, and presence of both fasciculus gracilis and fasciculus cuneatus: _____

Answer: Cervical

Flashcard 394: The language centers are found in the "dominant" hemisphere, which is most commonly the _____ hemisphere (80%)

Answer: left

Flashcard 395: Damage to the watershed zone between the middle and posterior cerebral arteries results in defects in higher-order _____ processing

Answer: visual

Flashcard 396: Identify the cortical area located in the superior parietal lobule.

Answer: Somatosensory association cortex (Brodmann areas 5 and 7)

Flashcard 397: The nucleus _____ supplies motor innervation of the pharynx, larynx, and upper esophagus (e.g. swallowing, palate elevation)

Answer: ambiguus

Flashcard 398: Colloid cysts are a pathologically benign tumor usually found in the _____

Answer: 3rd ventricle

Flashcard 399: Which brainstem level is characterized by the presence of the 4th ventricle, inferior olivary nucleus, and cranial nerves IX, X, and XII?

Answer: Open Medulla

Flashcard 400: Identify the brainstem level characterized by the following features: - Colliculi - Cerebral aqueduct - Cerebral peduncles - Oculomotor nerve (CN III)

Answer: Rostral midbrain

Extra: The presence of CN III (oculomotor nerve) nuclei and exiting fibers specifically identifies the **rostral** level of the midbrain (at the level of the superior colliculus). The caudal midbrain is characterized by the inferior colliculus and the trochlear nerve (CN IV).