Neuroanatomy — Flashcards

Flashcard 491: Sensory fibers containing pain and temperature information ascend or descend 1 - 2 spinal segments in _____ tract before synapsing in the dorsal horn with a 2nd-order neuron

Answer: Lissauer's

Flashcard 492: What cells synthesize the myelin for cranial nerves III through XII?_____

Answer: Schwann cells

Flashcard 493: Lesions to CN III (oculomotor) result in a "_____" pupil (size)

Answer: blown/dilated

Flashcard 494: Axons from the ciliospinal center of Budge exit at T1 and synapse on the _____ ganglion

Answer: superior cervical

Flashcard 495: Which ascending tract is responsible for the transmission of pain and temperature sensations?

Answer: Spinothalamic tract

Flashcard 496: Hypertensive hemorrhages most often occur in the _____ of the basal ganglia, followed by thalamus, pons, and cerebellum

Answer: putamen

Flashcard 497: Lesions of the _____ cerebellum (medial or lateral) may result in nystagmus and head tilting

Answer: medial

Flashcard 498: Which brain structure serves as the primary relay station for sensory information (except olfaction) traveling to the cerebral cortex?

Answer: Thalamus

Flashcard 499: 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 500: Identify the brainstem level characterized by the presence of colliculi, the cerebral aqueduct, and the exit of CN IV.

Answer: Caudal midbrain (at the level of the inferior colliculus)