chapter 20-23

Question 1

What is the most common symptom of vestibular dysfunction?

Answer 1

vertigo

Question 2

What part of the brainstem produces acetylcholine?

Answer 2

pedunculopontine nucleus

Question 3

The part of the brainstem that supplies dopamine to cerebral areas involved in motivation decision making is which of the following?

Answer 3

ventral tegmental area

Question 4

Loss of visual stabilization, objects seem to bounce:

Answer 4

Oscillopsia

Question 5

Path of the neural signal for vision passes from the:

Answer 5

optic nerve

Question 6

Acute onset of vertigo and nystagmus in response to a rapid change of head position

Answer 6

Benign paroxysmal positional vertigo

Question 7

When tracking the path of visual neural signals, axons projecting from the __________aspect of the retina cross whereas axons from the ____________aspect travel _________________.

Answer 7

contralateral; ipsilateral

Question 8

Which of the following are functions of the reticular formation?

Answer 8

Integrates sensory and cortical information.
Regulates somatic motor activity, autonomic function, and consciousness.
Modulates nociceptive (pain) information.

Question 9

What movements are necessary to accomplish gaze?

Answer 9

Saccades, smooth pursuits, and vergence eye movements direct gaze.

Question 10

When differentiating a patient’s report of dizziness, it is important to take into account the timing, targeted tests, oculomotor signs and _______________.

Answer 10

triggers

Question 11

What is the purpose of the vestibulo-ocular reflexes?

Answer 11

gaze stabilizing reflex

Question 12

Is nystagmus always a sign of nervous system abnormality?

Answer 12

no

Question 13

False sense of motion

Answer 13

vertigo

Question 14

Unarousable; no response to strong stimuli including a strong pinching of the Achilles tendon

Answer 14

coma

Question 15

The semicircular canals respond to _____________stimulus.

Answer 15

movement of the head

Question 16

Lesions that involve the motor connections from the cortex to the cranial nerves in the brainstem are called:

Answer 16

Corticobulbar Lesions