chap 13 Flashcards
functions of eye
Contains sensory receptors for vision
structures of eye
Sclera Choroid Retina Eyeball Conjunctiva Eye muscles
anatomy of eye
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external structures
Eye musclesEyelidsConjunctivaLacrimal apparatus
3 eye layers
ScleraChoroidRetina
vision required 4 mechanisms
Coordination of external eye muscles so that both eyes move together
Correct amount of light admitted by pupil
Correct focus of light upon retina by lens
Optic nerve transmitting sensory images to brain
diplopia
double vision
retinal dettathcmnet
separation of retina from choroid layer; damages blood vessels and nerves causing blindness
conjunctivitis
inflammation of the conjunctiva, usually from bacterial infection; also called pink eye
ear structures
Auricle
External ear
Middle ear
Inner ear
tinnitus
ringing in ears
vertigo
dizziness
otis externa
external ear infection; often by fungus; also called otomycosis or swimmer’s ear
otitis media
infection of middle ear; most commonly seen in children; watery fluid (serous otitis media) or pus (purulent otitis media) accumulates in middle ear cavity
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