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34 Cards in this Set
- Front
- Back
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pinna
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external ear. outer part.
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external auditory canal
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2.5cm canal. catches particles. lets sound waves in.
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tympanic membrane
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eardrum. separates external and middle ear.
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ossicles
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three bones in ear. malleus. incus. stapes.
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semi circular canal
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in inner ear. helps maintain balance..
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cochlea
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snail like shell. contains fluid. fluid carries sound waves from middle ear to auditory nerve.
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auditory nerve (acoustic nerve)
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carries messages to the brain
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eustacian tube
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runs from middle ear to back or nose/throat. drains any secretions from middle ear space.
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otosclerosis
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bones in middle eat become spongy. bones become fixed and less able to pass vibrations.
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presbycusis
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inner ear condition. impairment in hearing due to aging. loss of high pitched sounds. makes speech seem muffled and unclear.
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pupil
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opening in middle of iris. pupil size can varie ti let light in.
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cornea
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round transparent window that covers pupil & iris. allows light into the interior of the eye.
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aqueous humour
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clear watery fluid which separates the cornea from the lens.
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iris
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color in eye. regulates amount of light that strikes the retina.
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lens
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directly behind pupil. focuses image upon retina.
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macula
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lets you see fine detail in center of vision.
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vitreous humour
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jelly like substance that fills the eyeball and helps keep its shape.
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optic nerve
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receves impulses from the retina and transmits them to the brain
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scelera
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white outer most layer of the eye. protective sheild.
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choroid
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middle vascular layer. provides blood supply. nourishes.
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retina
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inner most layer. made up of nerve cells. recieves images and sends them to the optic nerve.
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cerumen
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earwax
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tinnitus
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ringing in ears
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otitis media
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middle ear infection
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menieres disease
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increased fluid in inner ear. resulting in vertigo. tinnitus. and hearing loss.
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vertigo
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dizziness
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macular degeneration
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eye disease that occurs when the macula is damaged. center part that allows you to see fine detail.
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retinal detachment
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results in visual loss
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glaucoma
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gradual clouding of the lens of the eye that prevents light from reaching the retina.
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presbyopia
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impared vision from age.
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conjunctivitis
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irritation to the inner eye lid. contagious condition "pink eye"
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sensory deprivation
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lack of stimulation
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sensory overload
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too much stimulation
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care of hearing aids
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no hairspray. no steam or vapor. never get it wet. handle carefully. no heat >120F. keep clean from wax. (turn on cup in hand to ear and listen for a whistle)
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