Neuroanatomy — Flashcards

Flashcard 491: Which gyrus contains the primary motor cortex?

Answer: Precentral gyrus

Flashcard 492: Which brain structure serves as the primary relay station for sensory information (except olfaction) traveling to the cerebral cortex?

Answer: Thalamus

Flashcard 493: The paramedian pontine reticular formation (PPRF) sends axons to synapse with cell bodies of the ipsilateral _____ nucleus

Answer: abducens

Flashcard 494: 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 495: 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 496: Which ascending tract is responsible for the transmission of pain and temperature sensations?

Answer: Spinothalamic tract

Flashcard 497: Which gyrus is located on the medial surface of the occipital lobe, inferior to the calcarine sulcus?

Answer: Lingual gyrus

Extra: The lingual gyrus is located on the medial surface of the occipital lobe, bounded superiorly by the calcarine sulcus and inferiorly by the collateral sulcus. It plays a role in visual processing.

Flashcard 498: Lesions to CN III (oculomotor) result in a "_____" pupil (size)

Answer: blown/dilated

Flashcard 499: Lesions of the _____ cerebellum (medial or lateral) may result in nystagmus and head tilting

Answer: medial

Flashcard 500: What cells synthesize the myelin for cranial nerves III through XII?_____

Answer: Schwann cells