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31 Cards in this Set
- Front
- Back
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3 general senses of touch
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temperature
pressure pain |
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5 special senses
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smell
taste sight hearing equilibrium |
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2 ways eye is protected
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1. enclosed in bony orbit
2. fat surrounding eye |
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Conjunctiva
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membrane lining eyelids
connects to surface of eye secretes lubricating mucus |
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lacrimal gland
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secretes lacrimal fluid (tears)
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lacrimal fluid consists of...
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dilute salt solution
contains antibodies & lysozyme |
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lacrimal fluid function
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protects eye
moistens eye lubricates eye |
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lacrimal fluid empties into
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nasal cavity
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sclera
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white of the eye
tough protective outer layer of eye |
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cornea
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transparent central anterior portion of eye
allows light to pass through |
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cornea
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only human tissue that can be transplanted without fear of rejection
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choroid
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pigmented layer which prevents light from scattering
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Iris
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pigmented layer that gives eye color
controls amount of light that enters eye |
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Pupil
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rounded opening in the iris
light enters eye |
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Rods
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photoreceptor cell
allow dim light vision & peripheral vision perception in gray tones |
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Cones
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photoreceptor cell
allow for detailed color vision |
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blind spot
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area of optic disc where optic nerve exits eye
no photoreceptor cells |
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ciliary body
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holds lens
controls lens shape |
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aqueous humor
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watery fluid found in chamber between lens and cornea
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aqueous humor
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fluid which provides nutrients for lens and cornea
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Vitreous humor
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gel-like substance behind lens
keeps eye from collapsing |
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optic disc
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area of retina that lacks photoreceptors
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ciliary body
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contains muscle that controls the shape of the lens
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choroid coat
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nutritive (vascular) layer of eye
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retina
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containing the rods and cones
contains the photoreceptors |
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vitreous humor
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gel-like substance that helps to reinforce the eyeball
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choroid coat
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pigmented layer that prevents light scattering within the eye
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ciliary body
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smooth muscle of eye
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refractory (light bending) media of eye
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cornea
aqueous humor lens vitreous humor |
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cornea
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anteriormost part of sclera
your "window on the world" |
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iris
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pigmented "diaphragm" of the eye
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