Neuroanatomy — Flashcards

Flashcard 381: The _____ comprises the nerve roots of lumbar, sacral, and coccygeal spinal nerves below the conus medullaris

Answer: cauda equina

Flashcard 382: The post-ganglionic neurons of the ANS have cell bodies in the _____ nervous system

Answer: peripheral

Flashcard 383: How many neurons are required for the dorsal column-medial lemniscus pathway? _____

Answer: Three

Flashcard 384: Holoprosencephaly is characterized by a monoventricle and fusion of _____ on MRI

Answer: basal ganglia

Flashcard 385: Which brainstem pathway carries fine touch, vibration, and proprioception from the body to the VPL nucleus of the thalamus?

Answer: Medial lemniscus

Extra: The medial lemniscus is formed by the decussation of second-order neurons (internal arcuate fibers) from the nucleus gracilis and cuneatus in the medulla. It carries fine touch, vibration, and proprioception to the VPL nucleus of the thalamus.

Flashcard 386: Cauda equina syndrome may be associated with '_____ anesthesia'

Answer: saddle (S3-S5)

Flashcard 387: Most fibers in the optic tract project to the _____ of the thalamus

Answer: lateral geniculate body

Flashcard 388: Where is the nucleus of CN XI (accessory nucleus) located? _____

Answer: Spinal cord

Flashcard 389: What syndrome is associated with lesion of the following areas? 1. Spinothalamic tract 2. Spinal trigeminal nucleus 3. Hypothalamospinal tract 4. Nucleus ambiguus (CN IX, X) 5. Vestibular nucleus (CN VIII) 6. Inferior cerebellar peduncle

Answer: Lateral medullary (Wallenberg) syndrome

Flashcard 390: 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