Vestibularcochlear Nerve Pt. 2

Question 1

Which tract is responsible for antigravity postural motor activity, and reactive balance responses?

Answer 1

The lateral vestibulospinal tract

Question 2

Which tract is responsible for head righting to head motion

Answer 2

The medial vestibulospinal tract

Question 3

What artery supplies blood to the vestibular nuclei, the dorsolateral medulla, and posterior lobe of the cerebellum?

Answer 3

The PICA

Question 4

What artery supplies blood to the peripheral vestibular system, lower 2/3 of the pons, and the ventrolateral cerebellum?

Answer 4

The AICA

Question 5

What are hallmark symptoms of the vestibular system lesion?

Answer 5

Nystagmus, dizziness, and imbalance

Question 6

A vestibular lesion can be either…

Answer 6

peripheral or central

Question 7

Characteristics of peripheral vestibular lesion

Answer 7

Receptors, afferent pathway (usually unilaterally)

Question 8

Characteristics of central vestibular lesion

Answer 8

CNS, unilateral or bilateral

Question 9

What is the most common cause of vertigo?

Answer 9

Benign paroxysmal positional vertigo

Question 10

Vertigo and nystagmus are direct impairments caused by….

Answer 10

the misplaced otoconia