Special Senses Flashcards Preview

Health Sciences OSTC > Special Senses > Flashcards

Flashcards in Special Senses Deck (47):
1

what do the eyelids and eyelashes do?

keep out dirt and bacteria

2

what are the lacrimal glands connected too

connected to the nasal cavity

3

what's the function of the lacrimal glands

they produce tears witch moisten and cleanse the eye

4

whats conjunctiva

the mucus membrane that lines the eyelid and covers the front of the eye providing additional protection

5

whats the sclera?

is the "white" part of the eye, the outermost layer

6

whats the function of the sclera?

it helps maintain the eyes shape

7

whats the cornea?

transparent front of the sclera

8

whats the choroid coat ?

the middle layer that is the blood vessels that nourish

9

whats the retina?

the inner lining of the eyeball that light waves fall onto after passing through the eye

10

what's the function of the retina

transmits impulces to the optic nerve

11

what are photoreceptors?

rods and cones

12

whats the iris?

colored portion of the eye

13

whats the pupil

opening int he center of the iris

14

where is the lens located?

behind the pupil

15

whats the lens function?

refracts rays to focus on retina

16

what do accommodates allow you to do?

allow near/far vision

17

hyperopia disease?

disease where the eyeball is too short effecting farsighness vision

18

What corrects hyperopia

Convex lenses

19

Myopia disease?

Disease where eyeball is too long effecting nearsighted vision

20

How do you correct myopia

Concave lenses and radial keratomoy surgery

21

Amblyopia?

Lazy eye

22

How do you correct amblyopia

Surgery, glasses, exercises and patching

23

Strabismus disease

Eyes dont move or focus together

24

How do you correct strabismus

Surgery, glasses, exercises and patching

25

What age group is strabismus most common in

Children

26

Whats astigmatism disease

Abnormal curvature of cornea

27

How do you correct astigmatism

Glasses or contacts

28

Whats a cataract

Cloudy lens

29

Whats glaucoma? Hows it controlled?

Increased intruoocular pressure. With meds

30

Whats conjunctivitis?

Contagious eye infection

31

How is conjunctivitis treated?

Antibiotics, eye drops, cream

32

Whats the ear?

Controls hearing and balances by transmitting impulses from sound waves too auditory nerve

33

Whats the pinna/auricle?

Outer visible part of the ear (largest structure)

34

Whats the external auditory canal?

The glands that produce cerumen (wax)

35

Whats cerumen?

Wax

36

Whats the tympanic membrane?

Eardrum that separates the outer ear from the middle ear . Vibrates when sound waves hit

37

Middle ear?

Small cavity in the temporal bone

38

Three bones of middle ear

Malleus ,incus, stapes

39

What do the Malleus ,incus, stapes in the middle ear do?

Transmit sound waves in the ear

40

Whats the inner ear?

Oval window thats the entrance too other parts of inner ear

41

Cochlea?

Organ of corti that transmits impulses to the auditory nerves

42

Semicircular canals?

Balance and equilibrium

43

Conductive hearing loss? Treat?

Sound Waves dont conduct to the inner ear because ruptured tempanic membrane

Treat- surgery , hearing age

44

Sensory hearing loss?

Damage to the inner ear or auditory nerve

45

Ottis media? Treat?

Infection of the middle ear that causes sore throat

T- antibiotics , myringotomy

46

Otitis extetna ? Treat?

Inflammation of external auditory canal (swimmers ear)

T- antibiotics , warm compresses

47

Otosclerosis?

Stapes become immobile causes conductive hearing loss