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Flashcards in sense organs Deck (27)
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1
Q

tympanic membrane function

A

transmits sound from outer ear to ossicles

2
Q

auditory ossicles function

A

amplify sounds from the air to cochlea

3
Q

cochlear function

A

hearing - lined with stereocilia

4
Q

vestibular apparatus function

A

balance organ

5
Q

eustacian tube

A

protects middle ear from pressure changes

6
Q

cause otitis externa

A

swimmers ear

water in ear

7
Q

cause otitis media

A

infection

8
Q

cause labrythitis

A

head injury, bacterial/viral infection

9
Q

s/s meniere’s disease

A

dulled hearing ‘attacks’
verigo
nausea
tinnitus

10
Q

1 cause of hearing impairment

A

measles

11
Q

conjunctiva function

A

protects cornea/front of eye when shut

12
Q

lacrimal apparatus function

A

produces tears

13
Q

to achieve clear vision, light has to be focussed on the retina this involves

  • — of the light rays
  • – of the eyes
A

refraction

accomodation

14
Q

when light moves from one substance to another with a different density the light rays bend - called

A

refraction

15
Q

describe 3 cells types that make up olfactory epithelium

A

olfactory receptors
supporting cells
basal cells

16
Q

contraction/relaxation of ciliary muscle to project a sharp image on retina

A

accomodation

17
Q

cells in retina that allow us to see in low light but don’t provide colour

A

rod cells

18
Q

vision cells in retina that are stimulated by bright light and allow us to see colour

A

cone cells

19
Q

chronic inflammation of eye causes itching and eyelid dandruff

A

blepharitis

20
Q

s/s blepharitis

A

redness
burning itching
sticky eyelids on waking
flakes at eyelash base

21
Q

stye cause

A

usually staphylococcus

22
Q

cause uveitis

A

autoimmune disease

23
Q

squint cause

A

genetic

24
Q

glaucoma cause

A

obstruction of canal of schlemm (smoking)

25
Q

glaucamona s/s

A

pain in eyes
haloes around lights
sensitivity to bright light
watery eye

26
Q

what does mucous in nose do

A

moisten olfactory epithelium

dissolve odorants

27
Q

taste also known as

A

gustation