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Flashcards in Chapter 12 Deck (67)
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30

A balance disorder which causes a person to feel that they are going around in space and are extremely dizzy

Vertigo

31

A disorder cause by fusion of the bones of the middle ear (otosclerosis)

Conduction deafness

32

A constant ringing in the ears

Tinnitus

33

The structure that helps equalize air pressure on the tympanic membrane (auditory tube)

Eustachian tube

34

A disorder caused by nonfunctional organs of Corti within the choclea

Sensorineural deafness

35

What is created when hair cells come in contact with the tectorial membrane?

Air impulse

36

What is the purpose of static equilibrium?

Balance

37

Sound waves directly cause what structure to vibrate?

Tumpanic membrane

38

Nonciceptors are receptors of _______.

Pain

39

Block the formation of chemicals that stimulate the nonciceptor

Analgesics

40

Responsible for vision in bright light

Cones

41

Responsible for vision in dim light

Rods

42

Changes the shape of the lens

Ciliary muscles

43

Controls light entry into eyes

Iris

44

Focus light onto he retina

Lens

45

Central area of retina

Maculalutea

46

Nearsightedness

Myopia

47

Farsightness

Hyeopia

48

Focusing of light rays behind the retina

Hyperopia

49

Corrected by convex corrective lens

Hyperopia

50

Fluid in the anterior cavity of the eye

Aqueous humor

51

Excess fluid pressure in the eye

Glacoma

52

Clouding of the lens and/or cornea

Cataract

53

Lens that has lost its elasticity with age

Presbyopia

54

Fluid in he posterior cavity of the eye

Vitreous humor

55

Normal vision

Enmeteopoa

56

Irregular curvature of the lens or cornea

Astigmatism

57

How many molecules of a substance need to be present in air to be smelled?

Only a few

58

How are taste and smell related?

Much of what we perceive as taste is actually smell

59

These papillae cover most of the surface of the tongue and rarely contain taste buds.

Filiform