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47 Cards in this Set
- Front
- Back
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What 3 things are required to have a knowledge of your environment?
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-sense organs to perceive stimulus
-cranial nerves to transmit -functioning area of brain to interpret |
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What are the 4 types of receptors?
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Chemoreceptors
Mechanoreceptors Thermoreceptors Photoreceptors |
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What part of the skull is the eye located in?
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The orbital cavity
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What is sclera?
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The tough white tissue surrounding the eye- the whites of the eyes
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What is the choroid?
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Layer containing blood vessels below the sclera which prevents light from reflecting in the eye
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What is the retina?
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The layer at the back of the eye where images from the lens are focused
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What is accomodation?
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The movement of the lens to allow for near or distant vision
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What shape does the lens have at different ages?
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Round as a child, oval as an adult, nearly flat in the elderly which causes difficulty accomodating near vision
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What is the iris?
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The colored muscle surrounding the pupil
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What is the pupil?
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The black part in the center of the eye, allows the transmission of light
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What is the cornea?
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The shiny covering of the eye/ it has pain and touch receptors
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What is astigmatism?
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Blurry vision caused by the cornea being abnormally shaped
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What is conjunctiva?
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The red lining of the inner eyelids
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What do lacrimal glands do?
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Secrete tears
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What does aqueous humor do?
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This salty clear fluid maintains the curvature of the cornea and assists in refraction
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What does vitreous humor do?
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Fills the vitreous chamber behind the lens, aids in refraction, maintains shape of eyeball
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What is the surgical removal of the eye called?
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Enucleation
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What do rods do?
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Allows the eye to see in black and white
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What do cones do?
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Allows the eye to see color
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If the cones are damaged, what condition results?
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Colorblindness
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What is the optic disc?
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The area in the retina where the optic nerves exit, there are no rods or cones in this area, called the "blind spot"
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What is myopia?
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When images are focused in the front of the retina allowing the eye to see things near/nearsightedness
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What is hyperopia?
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When images are focused in the rear of the retina allowing the eye to see things far away/farsightedness
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What is amblyopia?
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Lazy eye
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What is conjunctivitis?
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Imflammation of the conjunctiva usually from bacteria or the herpes simplex virus
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What is glaucoma?
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Buildup of pressure in the eye resulting in eventual blindness
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What is Strabismus?
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Gaze is pointed inward (cross-eyed) or outward (wall-eyed)
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What is a cataract?
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The buildup of film on the eye, may have a cloudy appearance
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What is the pinna?
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The outside part of the ear which picks up sound vibrations
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What are the 3 bones of the middle ear?
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The malleus(hammer) which hits the incus (anvil) which moves the stapes (stirrups)
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What are the eustachian tubes?
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They are small tubes connecting the middle ear to the throat, they equalize pressure within the ear
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What is the cochlea?
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The snail-like part of the inner ear that transmits impulses to the auditory nerve
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What do the 3 semicircular canals in the inner do?
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Help maintain balance
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What is an auditory canal onstruction?
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Anything that is obstructing the ear canal
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What is otitis media?
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Infection of middle ear
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What is Otosclerosis?
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Hardening of the ear usually through overuse causing gradual hearing loss
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What is epistaxis?
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Nosebleed
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What is glossitis?
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Inflammation of the tongue caused by irritation, injury, organisms, jagged teeth
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At what angle is an intradermal injection given?
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10-15 degree
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At what angle is an intramuscular injection given?
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90 degree
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At what angle is a subcutaneous (sub-q) injection given?
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45 degree
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What is hemolysis?
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Destruction of red blood cells by shaking lab tubes or leaving tourniquet on
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What is a hematoma?
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mass of blood in tissue causing a black and blue mark
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What is phlebitis?
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Inflammation of a vein caused by fishing in arm or smacking arm
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What is thrombophlebitis?
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Inflammation of the vein accompanied by a clot
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What are the 3 veins of the antecubital fossa?
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The median cubital (middle), the cephalic(outer) and the basilic (inner)
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What is the order of use of the lab tubes?
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1-Blood culture(sterile)
2-Yellow 3-Red 4-Light Blue(must be full) 5-SST 6-PST 7-Green 8-Lavender 9-Gray |
