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a&p (2)

the senses

Exotropia Abnormally outward gazed "walleye"
Esotropia Abnormally inward gazed "cross-eyed"
Cataract Gradually developing opacity of the lens, Occurs over 70. Painless, gradual blurring And loss of vision
Myopia Defect in vision so objects can only be seen when very near "Nearsightedness"
Hyperopia Only can see faraway objects "Farsightedness"
Choroid Keeps light from reflecting within the eye. Located under the Sclera; Contains blood vessels that serve the eye tissue
Astigmatism If the cornea develops an abnormal shape, vision becomes blurred
Sclera Maintains the shape of eye. It is the tough outer covering
Receptors Peripheral nerve ending of the sensory nerves
Conjunctiva Mucus membrane; covers anterior Sclera surface of the eye
Corneal abrasion A scratch or trauma to the cornea usually caused by a foreign body in the eye. Vision can be affected in the location and extent of the injury are significant.
Conjunctivitis Caused by inflammation of the Conjunctiva. Goes from one eye to the next; redness and a bloodshot appearance
Ptsosis Dropping upper eyelid. Could be result of a congenital condition, aging, fatty folds or neurological factors
Iritis Inflammation of the iris; causes moderate to severe to light, and small, nonreactive pupils
Pinna aka auricle, fleshy part of external ear, collects sound waves
Auricle aka Pinna
Tympanic membrane ear drum
Tinnitus ringing of the ears
Malleus aka hammer (one of the 3 inner bones of the ear)
Incus aka anvil (one of the 3 inner bones of the ear)
Stapes aka stirrup (one of the 3 inner bones of the ear)
Epistaxis caused by trauma and the usual clot time is between 15-30 minutes; medical term for nose bleed
Candidiasis fungal infection of the mucous membranes of the mouth and throat. Cream color or white patches of exudate on the tongue, mouth or throat that cannot be scraped off
Presbycusis a gradual loss of hearing do to old age
Sensorineural hearing loss that results from nerve transmission failure within the inner ear or the auditory nerve
cochlea coiled portion of bony labyrinth; series of interconnecting chambers in temporal bone; functions in hearing
Organ of Corti located within the cochlear duct; contains receptors for sound; hair cells with hairlike projections
semicircular Canals Maintain equilibrium
the middle ear is connected by the? Eustachian tube
external auditory canal s-shaped tube; passageway from the outside to the ear drum; Contains numerous hairs
Refraction the bending of light rays
refractive surfaces in the eye cornea, aqueous humor, lens, vitreous humor
extraocular muscles they contract or relax to permit movement of the eyeball
vitreous humor maintains the shape of the eyeball
aqueous humor maintain curvature of the cornea and assists in the refraction process
what are the 5 senses sight, hearing, taste, smell, touch
general senses widely distributed in the body
special senses localized in a particular area
Chemoreceptors chemical stimuli (taste buds, sense of smell)
Mechanoreceptors touch and feel pressure (hearing)
Nociceptors pain
Thermoreceptors heat and cold
Photoreceptors detection of energy from light
otitis externa infection of the external auditory canal; may cause pain and hearing loss; swimmer ear
otitis media infection of the middle ear, often associated with respiratory infections; most likely in children and infants
accommodation changing shape of the lens
Created by: bpstears



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