Biological Aspects: Auditory system 2, vestibular

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  • Created by: CanveySam
  • Created on: 11-05-15 20:56
What does the vestibular system do?
Detects the position and the motion of the body in space
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How does the vestibular system work?
By integrating information from peripheral receptors located in the inner ear
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What are the two main components of the vestibular system?
Semi circular canals and vestibular sacs
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What are the two vestibular sacs?
Saccule and Utricle
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what do the semi circular canals respond to?
Acceleration of the head or body due to gravity
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what is the push-pull system?
the semi circa canals work in pair; when one is stimulated the other is inhibited
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What is the vestibulo-occular effect?
signals from the semi-circ canals are sent as directly as possible (10ms) to the eye muscles
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what is the three neurone arc?
How info from the right semi circ canal travels
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How does info from the right semi circa canal travel?
Vestibulocochlear nerve, vestibular nucleus, abducens nucleus, oculomotor nucleus
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what do vestibular sacs detect?
linear acceleration of the head
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what are otoliths?
calcium carbonate crystals, get displaces and produce signal
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Utricles detect what?
forward/backward motion of the head and eye movements
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Saccules detect what?
vertical motion of the head
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Where are the vestibular nuclei?
Medulla
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Be able to label the medulla 4 vestibular nuclei
superior, lateral, medial, inferior
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Other cards in this set

Card 2

Front

How does the vestibular system work?

Back

By integrating information from peripheral receptors located in the inner ear

Card 3

Front

What are the two main components of the vestibular system?

Back

Preview of the front of card 3

Card 4

Front

What are the two vestibular sacs?

Back

Preview of the front of card 4

Card 5

Front

what do the semi circular canals respond to?

Back

Preview of the front of card 5
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