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Anatomy Unit 3 Final > ***neuro - auditory & vestibular > Flashcards

***neuro - auditory & vestibular Flashcards

1
Q

primary auditory cortex location

A

transverse temporal gyri

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2
Q

important to sound localization

A

superior olivary nucleus

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3
Q

damage to SON or trapezoid body

A

difficulty localizing sound

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4
Q

t/f ? SON receives input from ipsilateral cochlear nucleus

A

false; receives bilateral cochlear nucleus input

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5
Q

receptors in semicircular ducts detect

A

angular acceleration

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6
Q

crista

A

pocket of hair cells in ampulla

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7
Q

ampulla

A

swelling at end of semicircular duct

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8
Q

you will not find kinocilia in

A

cochlear hair cells

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9
Q

cupula deflection leads to

A

afferent fiber firing

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10
Q

saccule - when head is upright macula is

A

vertical (detects up and down)

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11
Q

utricle - when head is upright macula is

A

horizontal (detects side to side)

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12
Q

utricle and saccule detect

A

linear acceleration of head

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13
Q

gelatinous membrane of macula

A

otolithic membrane

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14
Q

gelatinous material of cristae

A

cupula

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15
Q

gelatinous material of organ of corti

A

tectorial membrane

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16
Q

primary afferent cell bodies of vestibular projections

A

Vestibular Ganglion of internal auditory canal

17
Q

peripheral process of vestibular ganglion

A

synaptic endings on hair cells

18
Q

central process of vestibular ganglion

A

vestibular nuclei of rostral medulla, caudal pons

cerebellum

19
Q

4 vestibular nuclei

A

superior
inferior
medial
lateral

20
Q

functions of vestibular input

A

posture
coordinate head movement
coordinate eye movement

21
Q

LVST arises from _______ goes down _______

A

lateral nucleus goes down lateral funiculus

22
Q

LVST provides _______ projections to _________

A

excitatory

ipsilateral antigravity mm.

23
Q

MVST arises from ________ and extends to ________ via _______

A

medial nucleus extends to
cervical cord via
MLF

24
Q

stabilizes head movement while walking and coordinates head/eye movement

A

MVST (baseball players)

25
Q

mediates postural changes

A

LVST

26
Q

Vestibulo Ocular Reflex system (VOR)

A

works to prevent images from moving on retina

27
Q

VOR afferent limb

A

VIII vestibular division

28
Q

VOR efferent limb

A

III, IV, VI

29
Q

nystagmus

A

VOR can’t compensate for head movements

30
Q

what does alcohol do to vestibular system?

A

decreases density of cupula to less than endolymph

creates positional nystagmus

31
Q

what 3 systems work together for vision sense

A

proprioceptive
vestibular
visual

32
Q

Romberg’s sign

A

close eyes -> sway, loss of balance

Anatomy Unit 3 Final (12 decks)

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