ear and eyes – Flashcards
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the process of bending light
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refraction
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medial movement of the eyes to focus on close objects
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convergence
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the process in which the lens must change shape to focus on close objects
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accommodation
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blurred vision due to unequal curvatures of the lens or cornia
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astigmatisism
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normal vision
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emmetropia
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within the structure hearing receptors(hair cells)send messages down
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cochlear nerve
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structure which transmits the vibrations from the outer ear to the ossicles
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tympanic membrane
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structure which transmits the vibrations from the ossicles to the perilymph inside the cochlea
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oval window
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another name for infection of the middle ear
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otis media
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the ability to sense the rotary or angular movement of the head
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dynamic equillibrium
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the ability to sense the position of the head with respect to the pull of gravity
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static equillibrium
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otoliths
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ear rocks
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uses otolithis to judge the direction of gravitational pull
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static equilibruim
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gelatinous cap to tell if the head is rotational or angular meobement
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dynamic equilibrium
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this type of equillibrium is sensed with the vestibule
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static
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this type of equilibrium is sensed with semicircular canals
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dynamic
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sound is converted to action potential within the organ of corti located in the
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inner ear
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three circular passages each in a different plane of space
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semi circular canals
