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Pain > Vestibular Junk Balancing > Flashcards

Vestibular Junk Balancing Flashcards

1
Q

What is the sixth sense?

A

vestibular

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2
Q

what are the two parts of the of vestibular system?

A

Peripheral sensory apparatus- the labyrinth Central pathways

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3
Q

Where are vestibular end organs located relative to the cochlea

A

posterior and lateral

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4
Q

what are bony cavities filled with / contain?

A

perilymph and contain membranous sacs with endolymph

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5
Q

Semicircular canals (3) what do they do?

A

detect angular head acceleration - Anterior (Superior) - Posterior (Inferior) - Lateral (Horizontal)

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6
Q

Otolith organs (2) what do they do?

A

-detect linear head acceleration - Utricle - Saccule

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7
Q

What are the two unnamed structures?

A

Big = Utricle

Small = Saccule

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8
Q

Crista ampullaris

A

The sensory sheet within the ampulla, containing hair cells and supporting cells.

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9
Q

What hair structures determine polarization?

A

many stereocilia (St) and a single kinocilium (Ki)

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10
Q

how do you depolarize the hair cells

A

Displacement of the stereocilia bundle toward the kinocilium results in hair cell depolarization.

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11
Q

how far off of horizontal is the lateral loop?

A

30 degrees up

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12
Q

Purpose of the Saccule and uticle

A

saccule = verticle

Utricle = horizontal

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13
Q

What are sensory sheets of the otolith organs called?

A

maculae –Otolithic Membrane (OM) is a gelatinous membrane covered by otoconia (OT) - calcium carbonate crystals that make the membrane heavier

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14
Q

Scarpa’s ganglion

A

The vestibular nerve arises from bipolar neurons that innervate the semicircular canals and otolith organ

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15
Q

The vestibular nuclei (4)

A

Superior

Inferior

Medial

Lateral

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16
Q

Central Vestibular Pathways (4)

A

Vestibulo-thalamocortical

Vestibulo-ocular

Vestibulo-spinal

Vestibulo-autonomic

17
Q

Lateral vesibulo spinal tract

A

goes all the way down to the toes

IPSILATERAL from lateral vestibular nucleus down the spinal column

18
Q

Vestibul-colic fn and pathway

A

maintains the head stability via neck muscles during body movement

medial vestibular nuclei -> bilateral projections to Cspine -> vestibulo spinal tract

19
Q

what is an otolithic specifec test

A

VEMPS ( vestibular evoked myogenic potentials)

20
Q

Vestibular - sympathetic pathways

A

check orthostatics,

Pain (8 decks)

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