Exam 2 Practice questions

Question 1

10 yr old severed his radial nerve. Which cell plays a role in regrowth?

Answer 1

schwann

Question 2

wallerian degeneration involves:

Answer 2

successive fragmentation of the axon

Question 3

46 yr old complains of right sided hearing loss and vertigo. A small tumor is found in her internal auditory canal. Which structure listed accounts for the hearing loss?

Answer 3

schwannoma

Question 4

7 yr old has a stumbling gait dizziness, diplopia, headache, vomiting, and coarse nystagmus toward the side of the lesion. He scans his speech. Tests for dysdiadochokinesia, papilledema, elevated csf protein, and intention tremor are positive.

Answer 4

medulloblastoma

Question 5

which of the following is a characteristic of lou gherig’s disease?

Answer 5

progressive bulbar palsy

Question 6

an example of a peripheral nervous system lesion is:

Answer 6

guillain-Barre Syndrome

Question 7

______ results in a sensory deficit known as sensory dystaxia or romberg sign. Patients are Romberg positive when they are able to stand with the eyes open but fall with the eyes closed

Answer 7

posterior column syndrome

Question 8

a neurologic manifestation of _______ is subacute combined degeneration. There is no involvement of LMNs

Answer 8

vit b12 deficiency

Question 9

______ depresses, abducts, and intorts the eye. Paralysis of this muscle results in extorsion and weakness of downward gaze

Answer 9

superior oblique

Question 10

10yr old has right arm and leg dystaxia, nystagmus, hoarsness, miosis and ptosis on the right. Lesions is on?

Answer 10

lateral medullary syndrome contains nucleus ambigues (larynx) hypothalomospinal tract (horner) inferior cerebellar peduncle (dystaxia) and vestibular nuclei (nystagmus)