Week 13 Flashcards by Fares Soliman

Q

What is the vestibular system divided into?

A

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Q

What is the purpose of the vestibular system?

A

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Q

What would this type of information be used for?

A

postural control

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Q

Label

A

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Q

Approximately how big is the vestibular system?

A

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Q

What is the tipping angle of the labyrinth?

A

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Q

What is the orientation angle of the superior and posterior canals?

A

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Q

Label

A

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Q

Label and explain the layers

A

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Q

Label

A

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Q

Label

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Q

Label

A

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Q

what are the hair cells? How do they move?

A

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Q

What are the canal pairs?

A

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Q

In a canal pair, what does excitation of one lead to?

A

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Q

Label which canal is responsible for each?

A

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Q

Explain the effects at rest vs in right acceleration

A

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Q

What is the resting discharge rate of both vestibular nerves? If head turns right, what happens to the discharge rate of the right and left vestibular nerves?

A

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Q

What are otoliths?

A

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Q

Label

A

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Q

What happens to otoliths when the head is bent forward?

A

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Q

Label and explain what direction it would go to depending on the motion

A

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Q

What is the innervation of the vestibular system?

A

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Q

Label

A

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Q

What is the responsibility of the vestibular nuclei complex?

A

Q

What are the components of the vestibular nuclei complex?

A

Q

What is the role of LVST?

A

Q

Explain LVST pathway

A

Q

What is the role of MVST?

A

Q

Explain MVST pathway

A

Q

What is the function of the ascending portion of MLF?

A

Q

Other than LVST and MVST, what are some other vital pathways?

A

vestibulo-thalamo-cortical
Vestibulo-autonomic
Vestibulo-cerebellar

Q

Explain the vestibulo-thalamo-cortical pathway

A

Q

Explain vestibulo-autonomic pathway

A

Q

Explain the vestibulo-cerebellar pathway

A

Q

Label

A

Q

Label

A

Q

Explain the vestibulo-ocular reflex

A

Q

Head turn to the left: label and explain active eye muscle, cranial nerves, and the effect on VOR

A

Q

What is the canal stimulated, 1st and 2nd synapses, and muscles activated for Horizontal VOR?

A

Q

If the head turns to the right and the eyes to the left, which eye muscle is inhibited?

A

Q

Explain vertical VOR

A

Q

What is the canal stimulated, 1st and 2nd synapses, and muscles activated for Vertical VOR (head up, down)?

A

Q

What can cancel VOR?

A

Q

What is the normal value for VOR?

A

Q

Explain the vestibulo-spinal reflex

A

Q

Explain central processing of vestibular input

A

Q

What happens when the vestibular system is affected?

A

Q

Where can deficits in the vestibular system arise?

A

Q

What kind of deficits can arise due to vestibular issues?

A

Q

Explain dizziness

A

Q

What can PT check to understand if the symptoms display vertigo?

A

Q

Explain dysequilibrium

A

Q

Explain nystagmus and its types

A

Q

What are the characteristics of peripheral nystagmus?

A

Q

Label and highlight the issue

A

Q

List and explain peripheral vestibular disorders

A

Q

Explain central nystagmus

A

Q

List and explain central vestibular disorders

A

Q

What can cause central vestibular disorders?

A

Q

Compare nystagmus, oculomotor, and other signs for central vs peripheral vestibular issues

A

Q

Label

A