TOUCH, PAIN ,TASTE AND SMELL Flashcards

1
Q

list the 5 specialised receptors in skin

A

merkel disc
meissner corpuscle
ruffini corpuscle
pacinican corpuscle
free nerve ending

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2
Q

what are signals from the skin conveyed by

A
  • mechanoreceptors
  • ## thermoreceptorsnocicoceptors
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3
Q

taste buds epithelium

A

stratified epitheliumw

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4
Q

how many taste buds on lateral surface of each vallate (circumvallate)

A

250 ~

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5
Q

how does sensory process start with smell

A

with interaction of odorant molecules with olfactory receptors locatted on the cilia of olfactory sensory neurons

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6
Q

outer ear consists of

A

auricle and external auditory meatus

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7
Q

middle ear consists of

A

tympanic membrane and auditory ossicles

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8
Q

inner ear consists of

A

cochlea
semicircular canals (3)
vestibulocochlear nerves

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9
Q

what is the inner ear responsible for

A

using mechanoreceptors to detect stimuli for hearing in cochlea and equilinriom in semicircular canals and send nerve impulses to brain via VESTI/

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10
Q

what does the auditory ossicles contain

A

malleus (hamer)
incus
stapes

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11
Q

what is the malleus attached to

A

tympanic membrane

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12
Q

what is stapes attached to

A

cochlea

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13
Q

what does the. midd;e ear also contain

A

eustachian tube auditory tube - connects with pharynx for equalising air pressure in the skull (blocked ear feeling)

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14
Q

what happens when sound hitting onto tympanic membrane cause

A

auditory ossicles to vibrate > amplification of sound waves

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15
Q

what. happens when ossicles vibrate

A
  • waves int he endolymph fluid inside the cochlea are generated
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16
Q

what do endolymph waves bend

A

stereocilia

17
Q

what does the utricle and saccule control

A

static position and linear acceleration of head

18
Q

function of semicirculrar ducts

A

rotational head movements

19
Q

where do the ducts of semicircular cansl extend from and return to

A

wall of the utricle

20
Q

what does each of the semicircular ducts have and expanded end called

A

ampulla

21
Q

where is the hair cells and supporting cells of the ducts in semicorcualr located

A

crista ampullaris