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53 Cards in this Set
- Front
- Back
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Orientation of the body (mainly the head) relative to the ground
Which 2 parts are associated with this? |
Static Equilibrium
Saccule and Utricle |
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Maintenence of the body position (mainly head) in response to sudden movements
Associated with what part? |
Dynamic Equilibrium
Semicircular Canals |
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What are the "rocks" that allow the body to know direction called?
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Otoliths- made of proteins and CaC03
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Dynamic equilibrium- crista within ____ of semicircular duct
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Ampulla
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Static Equil- ___ within utricle and saccule
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Macula
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Specialized epithel. with hair cells inside saculus and utriculus)
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Macula: "SPOT'
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A swollen end of the semicircular canal
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Ampula
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Otoliths that have moved into the semicircular canals
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Canalith
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What condition is caused when otoliths move into the semicircular canal?
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BPPV (positional vertigo)
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What gland secretes tears?
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Lacrimal
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What are tears made of?
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Enzymes and antibodies
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Plugs put into the ___ ___ can stop excessive tears.
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Inferior lacrimal canal
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Visual association area is in which lobe?
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Occipital lobe
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A jelly-like substance produced in the embryo- not continually replaced- produced in the posterior cavity
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Vitreous humor
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Yellow spot of the back of the eye is called?
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Macula lutea
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Which eye muscle allows movement in all directions?
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Laterl rectus muscle
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No blood vessels are located in the... ?
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Cornea
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If stuff gets inbetween layers of the lens, it causes air pockets, which lead to... ?
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Cataracts
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Def: pressure inside the anterior cavity of the eye
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Glaucoma
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Which part of the eye drains fluid from ant. chamber, and can open to fix glaucoma?
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Canal of Schlemm
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Optic disk is AKA?
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Blind spot
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Central fovea is AKA?
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Macula lutea
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Which animals dont have a blind spot?
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Octopus and Squid
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Def: converting light into electrical impulses?
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Transduction of light
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The visual cortex is located in which lobe?
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Occipital
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"A single type of receptor cannot produce hight sensitivity and high resolution"
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Duplicity Theory
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High sensitivity is related to?
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Night vision
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High resolution is related to?
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Day vision
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Does central fovea have RODS?
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NO, ONLY CONES
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Rods have what chemical?
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Rhodopsin only
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Missing cones mean...
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Colorblindness
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Glycoprotein AKA
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Opsin
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VIT A derivative?
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Retinal
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Not enough vit A means not enough retinal, means not enough rhodopsin, means...
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Not good night vision
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Path of light through retina goes which path?
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Ant to Post
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Direction of visual data processing goes which path?
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Post to Ant
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Retinal molecule that is colored is...
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Bent (cis)
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Retinal mol. this is straight is...
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Colorless (trans)
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Cis to trans is called?
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Isomerization
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In isomerization, what enzyme is used?
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rentinal isomerase
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Def: reuniting of retinal to opsin
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Regeneration
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Regeneration going from:
Dark-Light? Light-Dark? |
Cones
Rods |
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Disease of the ear- too much pressure in the cochlea- causes vertigo and rigning in the ear
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Meniere's Syndrome
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Used for hearing loss- allows small amount of hearing back
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Cochlear Implant
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In myopia, images hit the retina early or late?
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Early
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Myopia is corrected with which type of lens?
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CONCAVE
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Hypermetropia is corrected with which type of lens?
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CONVEX
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Def: increase of curvature of lens for near vision
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Accomodation
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Def: surgical removal of the eye
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Eunucleation
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Def: bulging eyes
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Exophthalmus
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Def: inflammation of the external auditory canal
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Otitis externa
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Def: loosedned retina
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Retinal detachment
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Def:nipple projections of the optic disk
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Papilledema
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