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OST14N01 Med Terms II > CH 17 Sense Organs > Flashcards

CH 17 Sense Organs Flashcards

1
Q

Normal adjustment of the eye to focus on objects from far to near.

A

Accommodation

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2
Q

Area behind the cornea and in front if the lens and iris. Contains Aqueous humor.

A

Anterior Chamber

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3
Q

Fluid produced by the ciliary body and found in the anterior chamber.

A

Humor

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4
Q

Consisting of two surfaces that are rounded, elevated and curved evenly, like part of a sphere.

A

Bioconvex

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5
Q

Middle, vascular layer of the eye between the retina and the sclera

A

Choroid

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6
Q

Structure on each side of the lens that connects the choroid and the iris. Contains ciliary muscles, and secrets aqueous humor.

A

Ciliary Body

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7
Q

Photoreceptor cell in the retina that transforms light energy into a nerve impulse. Cones are responsible for color and central vision.

A

cone

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8
Q

Delicate membrane lining the eyelids and covering the eyeball

A

conjunctiva

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9
Q

Fibrous transparent layer of the clear tissue that extends over the anterior portion of the eyeball.

A

cornea

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10
Q

Tiny pit or depression in the retina that is the region of clearest vision.

A

fovea centralis

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11
Q

Posterior, inner part of the eye.

A

fundus of the eye

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12
Q

Pigmented layer that opens and closes to allow more or less light in the eye.

A

iris

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13
Q

Transparent, bioconvex body behind the body of the eye.

A

lens

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14
Q

yellowish region on the retina lateral to and slightly below the optic disc; contains fovea centralis, which is the area of clearest vision

A

macula

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15
Q

Point at which optic nerve fibers cross in the brain

A

optic chasim

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16
Q

Region at the back of the eye where to optic nerve meets the retina. The blind spot of the eye that contains only nerve fibers.

A

optic disk

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17
Q

Crainial nerve carrying impulses from the retina to the brain

A

optic nerve

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18
Q

Central opening of the eye, surrounded by the iris, through which light rays pass

A

pupil

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19
Q

Blending of light rays by the cornea, lens, and fluids of the eye to bring the rays into focus on the retina.

A

refraction

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20
Q

Light sensitive nerve cell layer of the eye containing photoreceptor cells.

A

retina

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21
Q

Photoreceptor cell on the retina essential for vision in loe light and for pheripheral vision.

A

rod

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22
Q

tough, white outer coat of the eyeball

A

sclera

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23
Q

Relay center of the brain. Optic nerve fibers pass through this on their way to the cerebral cortex.

A

thalamus

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24
Q

Soft, jelly-like material behind the lens in the vitreous chamber; helps maintain the shape of the eyeall.

A

vitreous humor

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25
Q

aque/o

A

water

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26
Q

blephar/o

A

eyelid

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27
Q

conjunctiv/o

A

conjunctiva

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28
Q

cor/o, pupill/o

A

pupil

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29
Q

corne/o

A

cornea

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30
Q

cycl/o

A

ciliary body or muscle of the eye

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31
Q

dacry/o

A

tears, tear duct

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32
Q

ir/o, irid/o

A

iris

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33
Q

kerat/o

A

cornea

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34
Q

lacrim/o

A

tears

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35
Q

ocul/o, opthalm/o

A

eye

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36
Q

opt/o, optic/o

A

eye, vision

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37
Q

palpebr/o

A

eyelid

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38
Q

papill/o

A

optic disk

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39
Q

retin/o

A

retina

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40
Q

scler/o

A

sclera

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41
Q

uve/o

A

uvea; vascular layer of the eye

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42
Q

vitre/o

A

glassy

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43
Q

ambly/o

A

dull,dim

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44
Q

dipl/o

A

double

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45
Q

glauc/o

A

gray

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46
Q

mi/o

A

smaller

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47
Q

mydr/o

A

widen, enlarge

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48
Q

nyct/o

A

night

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49
Q

phot/o

A

light

50
Q

presby/o

A

old age

51
Q

scot/o

A

darkness

52
Q

xer/o

A

dry

53
Q

-opia, -opsia

A

vision

54
Q

-tropia

A

to tur

55
Q

defective curvature of the lens or cornea of the eye

A

astigmatism

56
Q

Farsightedness

A

hypertropia

57
Q

Nearsightedness

A

myopia

58
Q

Impairment of vision as a result of old age

A

presbyopia

59
Q

clouding of the lens, causing decreased vision

A

cataract

60
Q

small, hard, cystic mass on the eyelid

A

chalazion

61
Q

retinal effects of diabeties mellitus inlcude microaneurysims, hemmorrhages, dilation of retinal veins, and neovascularization.

A

diabetic retinopathy

62
Q

increased intraovacular pressure results in damage to the retina and optic nerve with loss of vision

A

glaucoma

63
Q

localized, purulent, inflammatory staohylocal infection of a sebaceous oil-producing gland of the eyelid

A

hordeolum (stye)

64
Q

progressive damage to the macula of the retina

A

macular degeneration

65
Q

repeitive rhythmic movements of one or both eyes

A

nystagmus

66
Q

two layers of the retina separate from each other

A

retinal detachment

67
Q

abnormal deviation of the eye

A

strabismus

68
Q

intravenious injection of fluorescien followed by serial photographs of the retina through dialted pupils.

A

fluorescein angiography

69
Q

visual examination of the interior of the eye

A

ophthalmoscopy

70
Q

examination of anterior ocular structures under microscopic magnification

A

slit lamp microscopy

71
Q

clarity of vision is assessed

A

visual acuity test

72
Q

measurement of the entire scope of vision

A

visual field test

73
Q

removal of the entire eyeball

A

enucleation

74
Q

surgical repair of the cornea

A

keratoplasty

75
Q

intense, precisely focused light beam (argon laser) ceates an inflammatory reaction that seals retinal tears and leaky retinal blood vessels

A

laser photocoagulation

76
Q

use of an excimer laser to correct errors of refraction

A

LASIK

77
Q

ultrasonic vibrations break up the lens; the pieces are then aspirated through the ultrasonic probe

A

phacocemulsification

78
Q

Suture of a silicone band to the sclera over a detached portion of the retina

A

scleral buckle

79
Q

channel that leads from the pinna to the eardrum

A

auditory canal/auditory meatus

80
Q

carry impulses from the inner ear to the cerebral cortex.

A

auditory nerve fibers

81
Q

channel between the middle ear and the nasopharynx

A

auditory tube/eustichian tube

82
Q

flap of the ear; protruding part of the ear.

A

auricle/pinna

83
Q

waxy substance secreted by the external ear

A

cerumen/earwax

84
Q

snail shell-shapped, spiraly wound tube in the inner ear, contains hearing sensitive receptors

A

cochlea

85
Q

fluid within the labrinth of the inner ear

A

endolymph

86
Q

second ossicle of the middle ear

A

incus; means anvil

87
Q

maze-like series of canals of the inner ear.

A

labyrinth

88
Q

first ossicle of the middle ear; means hammer

A

malleus

89
Q

sensitive auditory receptor area found in the cochlea of the inner ear

A

organ of Corti

90
Q

small bone(s) of the ear

A

ossicle

91
Q

membrane between the middle ear and the inner ear

A

oval window

92
Q

fluid contained in the labyrinth of the inner ear

A

perilymph

93
Q

passages in the inner ear associated with maintaining equilibrium

A

semicircular canals

94
Q

third ossicle of the middle ear; means stirrup

A

stapes

95
Q

membrane between the outer and the middle ear; also called eardrum

A

tympanic membrane

96
Q

central cavity of the labyrinth, connecting the semicircular canals and the cochlea. Maintains equilibrium.

A

vestibule

97
Q

acous/o, audit/o, audi/o

A

hearing

98
Q

aur/o, auricul/o, ot/o

A

ear

99
Q

cochle/o

A

cochlea

100
Q

mastoid/o

A

mastoid process

101
Q

myring/o, tempan/o

A

eardrum, tempanic membrane

102
Q

ossicul/o

A

ossicle

103
Q

salping/o

A

eusachian/auditory tube

104
Q

staped/o

A

stapes

105
Q

vestibul/o

A

vestible

106
Q

-acusis or -cusis

A

hearing

107
Q

-meter

A

instrument to measure

108
Q

-otia

A

ear condition

109
Q

benign tumor arising form the acoustic vestibulocochlear nerve in the brain

A

acoustic neuroma

110
Q

collection of skin cells and cholesterol in a sac within the middle ear.

A

cholesteatoma

111
Q

loss of the ability to hear

A

deafness

112
Q

disorder of the labyrinth of the inner ear; elevated endolymph pressure within the cochlea and semicircular canals

A

Meniere disease

113
Q

inflammation of the middle ear

A

otitus media

114
Q

hardening of the bony tissue of the middle ear

A

otosclerosis

115
Q

sensation of noises in the ear.

A

tinnitus

116
Q

sensation of irregular or whirling motion of oneself or of external objects.

A

vertigo

117
Q

testing the sense of hearing

A

audiometry

118
Q

surgical insertion of a device that allows sensorineural hearing impared persons to understand speech.

A

cochlear implant procedure

119
Q

measurement of the temperature of the tympanic membrane by the detection of infrared radiation from the eardrum.

A

ear thermometry

120
Q

visual examination of the ear canal with an otoscope

A

otoscopy

121
Q

test of ear conduction using a vibration source (tuning fork)

A

tuning fork test

OST14N01 Med Terms II (11 decks)

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