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Chapter 16

The Sensory System

auditory ossicles 3 bones in middle ear anchor eardrum to tympanic cavity and transmit vibrabrations to inner ear
auricle/pinna funnel like structure leading from external ear to external auditory meatus
choroid thin posterior membrane in middle layer of eye
ciliary body thick anterior membrane in middle layer of eye
cochlea snail shaped structure in inner ear contains organ of corti
cones specialize receptor cells in retina that perceive color and bright light
conjunctive muscous membrane lining the eyelid
cornea transparent anterior section of eyeball that bends light in process called refraction
decibel measure of intensity of sound
ear organ of hearing
eardrum oval, semi transparent membrane moves in response to sound waves and produces vibration
endolymph fluid inside the membranous labyrinth
equilibrium sense of balance
eustacian tube tube that conncts the middle ear to pharynx
eye orgn of sight
eyebrow clump of hair above eye to keep foreign particles from entering the eye
eyelashes group of hairs on end of eyelid to keep foreign particles from entering the eye
fovea centralis epression in center of macula luta; percieves sharpest image
eyelid moveable covering over the ey
hearing ability to percieve sound
incus one of 3 auditory ossicles; the anvil
iris colored part of eye; contains muscle sthat expand and contract in response to light
lacrimal glans glands that secrete liquid to moisten the eyes and produce tears
lens colorless flexible transparent body behind the iris
macula inner ear structure containing hairlike sensors that move to maintain equilibrium
macula lutea small yellowish area located in center of retina which has depression
malleus one of 3 autitory ossicles; the hammer
membranous labyrinth 1/2 tubes that make up semicircular canls
neuroretina thick layer of nervous tissue in retina
olfactory organs organs at top of nasal vaity containing olfactory receptors
optic nerve nerve that transmits nerve impulses from eye to brain
organ of corti structure on basiliar membrane with hairlike receptors that reveive and transmit sounds waves
osseus labrinth 1/2 tubes that make up semicircular canals
otoliths small calcifications in inner ear that help maintain balance
papillae taste buds
perilymph liquid secred by walls of oseus labyrinth
pupil black center of eye; opens and closes in respsonse to light because of iris
refraction process of bending light rays
reinta oval light sensitive membrane in intertior layer of eye; decodes light waves and transmits information to brain
rods specialized receptor cells in retina that perceive black to white shades
clera thick tough membrane in outer eye layer; supports eyeball structure
semicircular canals structures in inner ear important for balance
sensory receptors specialized tisse containing cells that can receive stimuli
sensory system organs that perceive and receive stimuli from ouside or within body
sight ability to see
smell ability to perceive odors
stapes 1/3 auditory ossicles; stirrup
taste ability to perveice the QULAITIES OF INGEST MATTER
taste budsuL organs that sense taste of food
taste cells specializze receptor cells within taste buds
tears moisture secreted from lacrimal glands
touh ability to perceive sensation on skin
tympanic membrane eardrum
uvea region of eye containing the iris choroid membran and ciliary bodies
vestibule bon chamber between semicircular canla and cochlea
audio; audito hearing
auro auriculo hearing
blepharo eyelid
cerumino wax
cochleo cochlea
conjuntivo conjunctiva
coro coreo pupil
corneo cornea
cyclo ciliary body
dacryo tears
iro irdio iris
kerato cornea
lacrimo tears
mastoid mastoid process
mmyringo eardrum; middle ear
naso nose
oculo eye
ophthalmo eye
opto optico eye
ossiculo ossicle
phaco phako lens
pupillo pupil
retino retina
sclero white of eye
scoto darkness
tympano eardrum ; middle ear
uveo uvea
acc accomodation
ad right ear
armd age related macular degeneration
as left ear
au both ears
ent ear nose throat
icce intracapsular cataract cyroextraction
iol intraocular lens
iop intraocular pressure
nva near visual acuity
d diopter
dB decibel
dva distance visual acuity
ecce extracapsular cataract extraction
eent eye ear nose throat
ou each eye
perrl perrla pupils equal round reactive to light; accomoodation
pe tube polyethylene ventilating tube; in eardrum
som serous otitis media
va visual acuity
od right eye
om otitis media
os left eye
vf visual field
+ plus; convex
- minus; concave
audiogram graph that plots te acoustic frequencies being tested
audiologist specialist evaluating hearing ufunction
audiometru measurement of acoustic frequencies using an audiometer
diopter unit of refracting power of lens
ophthalmologist medical specialist ho diagnoses and treats eye disorders
optician technicial who makes and fits corrective lenses
optometrist nonmedical specialist who examines the eyes and prescribes lenses
otologist medical specilist in ear disorders
otorhinolaryngologist medical specialist who treats ear nose and throat disorders
otoscopy inspection of ear using otoscope
tonometry measurement of tension or pressure within eye
aerotitis media inflammation of middle ear caused by air pressure changes
anacusis loss of hering
aphakia absence of lens
asthenopia wakness of ocular or ciliary muscles that causes eyes to tire easily
atigmatism distortion of sight beause lack of focus of light rays at one point on retina
blepharitis inflammation of eyelid
blepharochalasis loss of elasticity of eyelid
blpharospams involuntary eyelid movement; excessive blinking
blepharoptosis drooping of eyelid
blindess loss of sight
cataract cloudiness of lens of eye
chalazion nodular inflammation that usually forms on eyelid
cholesteatoma fatty cyst within middle ear
conjunctivitis inflammation of conjunctiva of eyelid
contact lenses corrective lenses worn on surface of eye
dacryoadenitis inflamation of lacrimal glands
dacryocystitis inflammation of tear duct
deafness loss of hearing
dermatochalasis loss of elasticity of eyelid
diplopia double vision
epiphora wxcessive tearing
esotropia deviation of one eye inward
exophthalmos abnormal protrusion of eyeballs
extropia deviation of one eye outward
eyestrain asthenopia
farsightedness hyperopia
glaucoma caused by abnormally high eye pressure
hordeolum infection of sevaceous gland of eyelid; sty
hyperopid focusing behind the rtina causing vision distortion
iritis inflammation of iris
keratitis inflammation of cornea
labyrinthitis inflammation of labyrinth
lacrimation secretions of tears
macular degeneration gradual loss of vision caused by degeneration of tissue in macula
mastoiditis inflammation of mastoid process
meniere's disease elevated pressire within cochlea
muopia focusing in front of retina causing vision distortion ; nearsightedness
myringitis inflammation of eardrum
nearsightedness myopia
nyctalopia night blindness
nystagmus excessive involuntary eyeball movement
otalgia pain in ear
otitis externa fungal infection of external ear calnal
otitis media inflammation of middle ear
otorrhagia bleeding from ear
otorrhea purulent discharge from ear
otosclerosis hardening of bones of ear
paracusis imparied hearing
blepharoplasty surgical repair of eyelid
cryoretinopexy fixing of torn retina using extreme cold
dacryocystectomy removal of lacrimal sav
enucleation removal of eyeball
iridectomy removal of part of iris
iridotomy incision into iris to relieve pressure
keratoplasty corneal transplant
myringotomy insertion of small tube to help drain fluid from ears
otoplasty surgival repair of outer ear
phacoemulsification use of ultrasound to break up and remove cataracts
stapedectomy removal of stapes to cure otosclerosis
trabeculectomy removal of part of trabeculum to allow aqueous humor to lfow freely around eye
tympanoplasty reapir of eardrum
antiseptic ear drops to cleanse ear by dispelling earwax
anti inflammatory ear drops to reduce ear inflammation
eye drops to reduce eye congestion
eye moisturizer to moisten eyes
miiotic contraction of pupil
mydriatic dilation of pupil
nasal decongestant to reduce nasal congestion
photophobia extreme sensitivity of light
pink eye conjunctivities
presbyacusis age related hearing loss
presbyopia age related dimised ility to focus or accomodate
pseudophakia eye with an implanted lens after cataract surgery
retinitis inflammation of retina
retinities pimentosa progressive inherited disease with pifmented spot on retina and poor night vision
scleritis inflammtaion of sclera
scotoma blind spot in visino
strabismus eye misalignment
sty hordeolum
tinnitus constant ringing or buzzing in ear
trichiasis abnormal growth of eyelashes in direction tht causes them to rub on eye
tympanitis inflammation of eardrum
vertigo dizziness
Created by: cs3516