Neuroanatomy — Flashcards

Flashcard 341: Any unilateral lesion of the spinothalamic tract in the spinal cord or brain stem will present on the _____-lateral side 1-2 segments below the lesion

Answer: contra

Flashcard 342: Which part of the internal capsule is located at the junction (bend) between the anterior and posterior limbs?

Answer: Genu of the internal capsule

Flashcard 343: What structure in the medulla separates CN IX and X from CN XII? _____

Answer: Olive

Flashcard 344: What white matter tract connects Broca's area and Wernicke's area?

Answer: Arcuate fasciculus

Extra: The arcuate fasciculus is a bundle of axons that connects Broca's area and Wernicke's area. Lesions to this tract result in **conduction aphasia** (characterized by poor repetition but relatively preserved comprehension and speech production).

Flashcard 345: CNS infarcts associated with damage to the vestibular portion of CN VIII is more commonly associated with _____ lesions

Answer: lateral medullary

Flashcard 346: Amyotrophic lateral sclerosis (ALS) typically begins at _____ levels of the spinal cord

Answer: cervical

Flashcard 347: Which dopaminergic pathway connects the arcuate nucleus (hypothalamus) to the pituitary? _____

Answer: Tuberoinfundibular pathway

Flashcard 348: Which nucleus mediates pain and temperature sensation from the face?

Answer: Spinal trigeminal nucleus

Flashcard 349: Which artery, typically arising from the vertebral artery, supplies the lateral medulla and the posteroinferior cerebellum?

Answer: Posterior inferior cerebellar artery (PICA)

Extra: Occlusion of the PICA (or its parent vertebral artery) leads to Lateral Medullary (Wallenberg) syndrome. This presents with ipsilateral cerebellar signs, Horner syndrome, and sensory loss (ipsilateral face, contralateral body).

Flashcard 350: One component of the blood-brain barrier is _____ between non-fenestrated capillary endothelial cells

Answer: tight junctions