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33 Cards in this Set
- Front
- Back
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3 Main Components of Ear
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-Outer
-Middle -Inner |
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Outer Ear
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-responsible for collecting, conducting, and amplifying sound waves
-canal lined with serum |
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Tympanic membrane
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-serves as boundary b/w outer and middle ear
-normally concave--bulging or convex indicates acute infectious process |
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Middle Ear-3 bones
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-Hammer
-anvil -stapes ...AKA ossicles |
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Eustacian Tubes
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middle ear
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Eustacian Tubes Function
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equalize pressure
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Inner ear responsibilities
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hearing and equilibrium
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Inner ear-3 main parts
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-semicirclar canals
-vestibule -cochlea |
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Semicircular canals
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provide balance
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Vestibule
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central chamber of the ear
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Cochlea
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snail shaped structure contains auditory organ for hearing
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Eye--3 separate coats (tunics)
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-Fibrous tunic
-Vascular tunic -Nervous tunic |
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Fibrous Tunic
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outer coat of eyeball
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Vascular Tunic
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contains posterior choroid, anterior ciliary body, and iris
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Nervous Tunic
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innermost tunic of the eye
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External structure of the eye
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Conjuctiva and lacrimal glands
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Iris
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contains pigment responsible for eye color inside iris is pupil
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Pupil
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permits light to enter the eye
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Rods
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vision in dim light
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Cones
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daytime vision (color vision)
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Optic disc
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AKA blind spot
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Conjunctiva
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lines eyelid
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Lacrimal glands
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produce tears and destroys pathogens
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Aqueous Humor
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the clea, watery fluid in the front of the eyeball
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Choroid
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the thin, blood-rich membrane that lies between the retina and the sclera; supplies blood to retina
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Ciliary Body
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part of the eye that produces aqueous humor
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Cornea
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the clear, dome-shaped surface that covers the front of the eye
"window of the eye" |
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Lens
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transparent structure inside eye that focuses light rays onto the retina
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Macula
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focusing portion of the eyeball that allows us to see fine details clearly
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Optic nerve
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nerve fiber that connect the retina to the brain. carries signals of light, dark, and colors to the area of the brain (visual cortex) which assembles signals to images
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Posterior Chamber
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the back part of the eyes interior
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retina
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the light-sensitive nerve layer tha tline the back of the eye
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sclera
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white visible portion of the eyeball. the muscles that move the eyeball are attached to the sclera
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