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21 Cards in this Set
- Front
- Back
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dynamic equilibrium is detected by
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crista ampullaris
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crista ampullaris are ____ in the ____ canals
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receptors - semicircular
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crista ampullaris detect
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acceleration
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crista ampullaris mainly respond to
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rotational or angular movements
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how many semicircular canals in each ear
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3
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name the 3 semicircular canals in each ear
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anterior - posterior - lateral semicircle canals
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each semicircular canal is oriented in a different
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plane of direction
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semicircular canals have different planes of motion that allows
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detection of movement in all directions
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each semicircular canal contains a membranous duct filled with
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endolymph
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ampulla is the ____ area at the base of each ____ ____
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enlarged - semicircular canal
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each ampulla contains
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crista ampullaris
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crista ampullaris are receptor ____ ____ surrounded by ____ ____
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hair cells - supporting cells
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what structures is on the hair cells of the crista ampullaris
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cilia
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crista ampullaris contains a gel-like cap called
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cupula
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cilia on the hair cells project up into the
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cupula
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rotational movement of the head causes ____ in the semicircular ducts to move
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endolymph
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during rotational movement as the endolymph swings by the crista, the ____ is bent
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cupula
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during rotational movement bending of the cilia causes ____ of the hair cells
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depolarization
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during rotational movement, when the hair cells are depolarized a ____ ____ is generated
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nerve impulse
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all information regarding equilibrium coming from the maculae and the semicircular canals travels through the ____ ____
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vestibular nerve
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the vestibular nerve joins the cochlear nerve to form the
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vestibulocochlear nerve (CN III)
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