Module 6 Quiz

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The path of the optic nerve passes from the _____________ to the _______________.
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Terms in this set (16)
The path of the optic nerve passes from the _____________ to the _______________.
retina; optic chiasm
Martha performed the Romberg test and was able to keep her balance with her eyes open. However, as soon as she closed her eyes, she became unsteady. Which of the following is true regarding the results of her test?

a) She likely has sensory ataxia because she is using her eyes to maintain balance

b) She has a positive Romberg sign

c) Cerebellar ataxia can be ruled out

d) All options are correct
d
Which of the following are signs of Unilateral Vestibular loss?

a) Head tilt to the affected side
b) All of the answers are correct
c) Ocular rotation
d) Skew deviation of the eyes
b
Mr. Jones is an older adult who c/o sudden dizziness (vertigo) and presents with nystagmus when he changes head position abruptly. He reports that the dizziness subsides after several minutes.

What vestibular condition does he likely have?
Benign Paroxysmal Positional Vertigo
Which of the following tests can be administered to identify Mr. Jones's condition?
The Dix-Hallpike maneuver which provokes movement of the otoliths
True of False?

The semicircular canals are sensitive to angular acceleration or rotation.
True
Which of the following neural control systems maintains a stable or fixed gaze?
Vestibulo-ocular reflex
Justin is typing information from his book to the computer screen which is a further away. His eyes are using what type of movement?
Vergence
In general, information from the right visual field is conveyed to which of the following?
Left lateral geniculate and left visual cortex
True or False?

A lesion located after the optic chiasm will result in loss of vision from the contralateral visual fields of both eyes.
True
A clinician working with a patient suspects coordination issues by observing his gait. Which of the following tests would further help to identify a coordination problem?Heel to shin testTrue or False? Pathologic nystagmus is fatigable and habituates in central vestibular disorders.False (peripheral)What is the associated Visual Field Loss that correspond with lesions marked in #2 (optic chaism)?loss of the temporal visual field from both eyesWhich of the following tests would be used to detect the onset of vertigo and nystagmus associated with BPPV?Dix Hallpike ManeuverTrue or False? Nausea and vomiting is more severe in Central Nervous System disordersFalse (peripheral)Which of the following activities utilizes saccades?Reading