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Medical Terminology > Chapter 11: Ears and Eyes > Flashcards

Chapter 11: Ears and Eyes Flashcards

(86 cards)

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1
Q

external ear

A

auricle, external auditory canal

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2
Q

middle ear

A

from tympanic membrane to oval window; malleus, incus, stapes

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3
Q

inner ear

A

series of fluid filled passages knkown as labyrinth

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4
Q

cochlea

A

front portion of inner ear

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5
Q

vestibular apparatus

A

rear portion of inner ear

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6
Q

external ear produces

A

cerumen - filter that trapps dust and foreign substances

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7
Q

indented shape of auricles act as

A

effective receivers of sound waves

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8
Q

soundwaves travel through auditory canal and strike tympanic membrane which

A

vibrates the ossicles

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9
Q

organ of Corti

A

sensitive auditory receptor area in cochlea

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10
Q

ot.o

A

ear

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11
Q

myring/o, tympan/o

A

tympanic membrane

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12
Q

labyrinth/o

A

labyrinth

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13
Q

acous/o, audi/o, audit/o

A

hearing

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14
Q

mastoid/o

A

mastoid process

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15
Q

salping/o

A

tubes

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16
Q

-acusis

A

hearing

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17
Q

-opsia

A

vision

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18
Q

-stenosis

A

narrowing

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19
Q

-tropia

A

turning

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20
Q

otitis media

A

accumulation of fluid in middle ear, earache

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21
Q

serous otitis media

A

chronic may develop from acute condition, or result from overgrowth of adenoidal tissue or chronic sinus infections

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22
Q

suppurative otitis media

A

caused by introduction of pyogenic microorganisms into middle ear

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23
Q

PE tubes

A

pressure equilizer tubes

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24
Q

conductive hearing loss

A

due to impairment in transmission of sound

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25
meniere disease
disorder of unknown etiology within labyrinth of inner ear that can lead to hearing loss
26
otosclerosis
progressive deafness due to ossification in bony labyrinth of inner ear
27
presbycusis
impairment of hearing that results from aging process
28
tinnitus
ringing or tinkling noise heard constantly or intermittently in one or both ears
29
vertigo
sensation of moving around in space or feeling of dizziness or spinning
30
rinne
evaluates bone versus air conduction of sound (tuning fork test)
31
webber
evaluates bone conduction in both ears at same time (tuning fork test)
32
myringotomy
incision of tympanic membrane and insertion of PE tube to treat chronic otitis media
33
eye outer layer
fibrous tunic: scelra, cornea, conjunctiva
34
middle eye layer
vascular tunic (uvea): choroid iris, cilliary body, lens
35
cilliary body
externsion of choroid, attaches to suspensory ligaments that hold the lens in place behind the iris
36
innermost layer or eye
sensory tunic - double layered retina
37
retine composed of
optic disk, optic nerve, rods and cones
38
lacrimal gland
produces tears
39
sclera
white opaque outer surface that protects inner structure of eye and helps maintain its sahape
40
cornea
transparent layer allows light to enter and refracts light
41
conjunctiva
delicate transparent mucous membrane that covers insides of eyelid
42
choroid
supplies blood to entire eye
43
rods
detect shades of gray at all levels of light
44
cones
detect color but operate only at high light levels
45
optic disk
area in retine where nerve fibers and blood vessels enter and exit
46
optic nerve
cranial nerve II - carries impulses from retina to areas of brain responsible for processing visual information
47
aqueous humor
watery fluid continuously produced by ciliary body
48
aqueous humor drains into
canal of Schlemm, circular channel around iris, absorbed into veins and taken away by blood
49
vitreous humor
gel-like substance that helps maintain shape of eye; fills posterior cavity
50
extraocular muscles
control eye movement, attached to sclera by tendons
51
ocul/o, opthalm/o
eye
52
blephar/o
eyelid
53
opt/o
eye, vision
54
retin/o
retina
55
choroid/o
choroid
56
irid/o
iris
57
corne/o
corneo
58
dacry/o, lacrim/o
tear, lacrimal apparatus duct, sac, gland
59
dipl/o
double
60
kerat/o
horny tissue, hard, cornea
61
cor/o, core/o, pupill/o
pupil
62
-opia, -opsia
vision
63
-ptosis
prolapse, downward displacemnt
64
-tomy
incision
65
-tropia
turning
66
cataract
opacity or clouding of lens or its surrounding membrane
67
IOLs
intraocular lenses that are surgically implanted
68
two common surgical methods to remove cataracts
phacoemulsification, intracapsular and extra capsular extraction
69
strabismus
visual defect in which both eyes cannot be directed to focus simultaneouslu on same object
70
esotropia
eye turns inward, cross eye
71
exotropia
eye turns outward - wall eye
72
glaucoma
accumulated fluid pressure within eye damages retina and optic nerve - blindness
73
macular degeneration
macula, small area of retine responsible for central and color vision - degenerates
74
dry macular degeneration
slow and progressive loss
75
wat macular degeneration
sudden onset
76
hordoleum
stye - inflammatory infection of sebaceous glands of eyelid
77
achromatopsia
congenital deficiency in color perception
78
astigmatism
defective curvature of the cornea and lens that causes light rays to focus unevenly over retina
79
conjunctivitis
inflammation of conjunctiva - pinkeye
80
diabetic retinopathy
occurs in people with diabetes - scarring and eventual loss of vision
81
photophobia
unusual intolerance and sensitivity to light
82
retinal detachment
separation of retina from choroid
83
tonometry
detects glaucoma by measuring increased IOP
84
visual acuity test measured with use of
snellen chart; person is 20 feet from chart
85
miotics
causes pupils to constrict, increases outflow of eye fluid
86
mydriatics
causes pupils to dilate

Medical Terminology (18 decks)

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