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18 terms

Parts of the eye

parts of the eye and functions
STUDY
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ciliary zonule
-attaches the lens to the ciliary body
aqueous humor
-fluid in the anterior segment of eye that provides nutrients to the lens and cornea
sclera
-the "white" of the eye - protective layer
optic disk
-area of retina that lacks photoreceptors
ciliary body
-contains muscle that controls the shape of the lens -attaches ciliary zone and iris
choroid
-nutritive (vascular) layer of the eye -heavily pigmented layer that prevents light scattering in the eye
retina
-layer containing the rods and cones
vitreous humor
-gel-like substance that helps to reinforce the eyeball
smooth muscles structures (2)
-ciliary body & iris
fovea centralis
-area of acute or discriminary vision
refractory media of the eye (4)
-cornea -lens -aqueous humor -vitreous humor
cornea
most anterior part of the sclera- your "window" to the world
iris
pigmented "diaphgragm" of the eye
what do tarsal glands produce?
oily secretion
what does the conjunctiva produce?
secretes mucus
trace the pathway of light from the time it hits the cornea until it excites the rods and cones.
cornea---> aqueous humor---> pupil---> aqueous humor---> lens---> vitreous humor--->retina--->rods/cones
conjunctivitis
- pink eye -caused by viruses or bacteria
glaucoma
increased pressure in the eyeball due to obstruction of the outflow of aqueous humor