Sensory Organs Flashcards
aque/o
water
blephar/o
eyelid
conjuctiv/o
conjuctiva
cor/o
pupil
corne/o
cornea or Kerat/o
cycl/o
ciliary body or muscle of the eye
dacry/o
tears, tear duct
ir/o, irid/o
iris
kerat/o
cornea
lacrim/o
tears
ocul/o
eye
ophthalm/o
eye
opt/o, optic/o
eye, vision
palpebr/o
eyelid
papill/o
optic disc; nipple like
phac/o, phak/o
lens of eye
pupill/o
pupil
retin/o
retina
scler/o
sclera
uve/o
uvea; vascular layer of eye
vitre/o
glassy
ambly/o
dull, dim
amblyopia
is reduction of visual acuity.
dipl/o
double
diplopia
double vison
glauc/o
gray
glaucoma
mass or collection of fluid in vision
mi/o
smaller, less
mydr/o
widen; enlarge
nyct/o
night
nyctalopia
blindness or poor vison at night but good during day
phot/o
light
photophobia
sensitivity to light
presby/o
old age
scot/o
darkness
xer/o
dry
-opia
vision
hyperopia
farsightedness
-opsia
vision
hemianopsia
absence of vision in half of the visual
-tropia
to turn
esotropia
turning inward of eye
exotropia
turning outward of an eye
astigmatism
defective curvature of the cornea or lens of the eye.
photoreceptor cell responsible for color and central vision located in the retina that transforms light energy into nerve impulses
delicate membrane lining the undersurface of the eyelids and covering anterior eyeball
region at the back of the eye where optic nerve meets the retina
macula?
yellowish region in the retina; contains the fovea centralis
pigmented layer that opens and closes to allow more or less light into the eye
hyperopia
farsightedness
myopia
nearsightedness
presbyopia
impairment of vision as a result of old age
cataract
clouding of the lens, causing decreased vision
chalazion
small, hard, cystic mass on the eyelid
diabetic retinopathy
retinal effects of diabetes mellitus
occurs when fluid leaks from blood vessels into the retina and vision is blurred
macular edema
fluid leaking from the blood
exudates
increased intraocular pressure results in damage to the retina and optic nerve with loss of vision
glaucoma
increased intraocular pressure results in damage to the retina and optic nerve with loss of vision
glaucoma
hordeolum
localized, purulent, inflammatory staphylococcal infection of the sebaceous oil-producing gland in the eyelid
progressive damage to the macula of the retina
macular degeneration
repetitive rhythmic movements of one or both eyes
nystagmus
two layer of the retina separate from each other
retinal detachment
photopsia
bright flashes of lights
black spots or filmy shapes
floaters
abnormal deviation of the eye
stabismus
blepharitis
inflammation of eyelid, causing redness, crusting, swelling along lid margins
dacryocystitis
blockage, inflammation, and infection of the nasolacrimal duct that causes redness and swelling in the region between nose and lower lid
xanthelasma
raised yellowish plaque on eyelid caused by lipid disorder
fluroscein angiography
intravenous injection of fluorescein (dye) followed by serial photographs of the retina via dilated pupils.
ophthalmoscopy
visual examination of the interior of the eye
examination of anterior ocular structures under microscopic magnification
slit lamp microscopy
clarity of vision is assessed
visual acuity test
snellen chart
distance vision test
visual filed test
measurement of the entire scope of vision
enucleation
removal of entire eyeball
keratoplasty
surgical repair of the cornea
intense, focused light beam creates inflammatory reaction that seals retinal tears and leaky retinal blood vessels
laser photocoagulation
use of excimer laser to correct errors of refraction
Lasik
ultrasonic vibrations break up the lens; the pieces then aspirated via ultrasonic probe
phacoemulsification
suture of a silicone band to the sclera over a detached portion of the retina
scleral buckle
removal of vitreous humor
vitrectomy
What are the three regions of the ear?
outer ear, middle, and inner ear
Which two ear regions function in the conduction of sound waves via the ear?
out and middle ear
Which ear region receives the auditory waves and relays them to the brain?
inner ear
Where do sound waves enter the ear?
Auricle or Pinna
another name of auditory canal
external auditory meatus
Yellow brown, waxy substance
cerumen
What does cerumen do
lubricates and protects ear canal
What does soundwaves strick after traveling via the audiotory canal
tympanic membrane or eardrum
three small bones
ossicles
what conducts sound waves in the middle ear
ossicles
canal leading from middle ear to pharynx
eustachian tubes
What does the eustachian tube do when swallowing
opens
Why does the eustachian tube open during swallowing
to prevent damage to the eardrum and shock to the middle and inner ear
What is the inner ear called
labyrinth due to circle maze like structure
bony snail shell shape
cochlea
What organ contains tiny, hair cells that received vibrations
organ of corti
Voc - channel that leads from pinna to eardrum
auditory canal
Voc- auditory canal
auditory meatus
Carries impulses from inner ear to brain
auditory nerve fibers
channel between middle ear and nasopharynx
auditory tube
auricle
flap of the ear or external ear
waxy substances secreted by external ear
cerumen
fluid within labyrinth of inner ear
endolymph
auditory tube
eustachian tube
small bone of ear
ossicle
fluid in labyrinth of inner ear
perilymph
Acous/o
hearing
audi/o
hearing, the sense of hearing
audi/o
hearing
aur/o, auricul/o
ear
audiologist
health care proff specializes in evaluation of people with hearing loss
cochle/o
cochlea
mastoid/o
mastoid process
myring/o
eardrum, tympanic membrane
ossicul/o
ossicle
ot/o
ear
salping/o
eustachian tube, auditory tube
staped/o
stapes
tympan/o
eardrum, tympanic membrane
vestibul/o
vestibule
-acusis or -cusis
hearing
hypercusis
abnormal acute sensitivity to sounds
presbycusis
nerve deafness occurs with aging
-meter
instrument ot measure
-otia
ear condition
macrotia
abnormally large ears
audiogram
record produced when individual’s hearing is tested by audiometry
acoustic neuroma
benign tumor from acoustic vestibulocochlear nerve in brain
cholesteatoma
collection of skin cells and cholesterol in sac of middle ear
deafness
loss of ability to hear
meniere disease
disoder fo labyrinth of inner ear
otitis media
inflammation of inner ear
acute otitis media
infection of middle ear after URI.
otosclerosis
hardening of bony tissues of middle ear
tinnitus
sensation of noises in ear
vertigo
sensation of irregular or whirling motion either of oneself of external objects
audiometry
testing the sense of hearing
cochlear implant procedure
surgical insertion of a device that allows sensorineural hearing impaired persons to understand speech
ear thermometry
measurement of the temperature of the tympanic membrane by detection of infrared radiation from eardrum
otoscopy
visual examinaiton of the ear canal with otoscope
tuning fork test
test of ear conduction using a vibration source
tough white outer layer of eyeball
sclera
colored portion of the eye surrounds pupil
iris
fibrous layer of clear tissue that extends over anterior portion of eyeball
cornea
delicate membrane lining eyelids and covers anterior eyeball
conjunctiva
vascular layer of eyeball that continous with iris
choroid
open center of iris through which light rays enter
pupil
jelly like material behind lens that helps maintain shape of eyeball
vitreous humor
transparent structure behind iris and in front of vitreous humor; refracts light rays onto retina
lens
contains muscles that control shape of lens and secretes aqueous humor
ciliary body
sensitive cells called rods and coens that transform light energy into nerve impulses
retina
