words worth knowing- structure of the eye

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empezar lección

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término		definición
sclera empezar lección		opaque, white covering that surronds the eye, and gives the eye its shape
cornea empezar lección		clear covering in front of the pupil and the iris
lacrimal glands empezar lección		tear glands; help to nourish the cornea
iris empezar lección		circular muscles that surround the eye, contractions and relaxations help regulate light entering the eye
pupil empezar lección		an opening in the eye that absorbs the light
ciliary muscles empezar lección		musles that relax and contract to change shape of the lens, adgustments are called ACCOMADATING
aqueous humor empezar lección		liquid produced by the the Anterior Chamber to clean and nourish the cornea
lens empezar lección		convex shaped disc and it is held in place by the ciliary muscles
vitreous humor empezar lección		gel like substance that surround the les to protect it
retina empezar lección		the back of the eye, contains photoreceptors that detect light
optic disk empezar lección		the entrance point of the optic nerve
blind spot empezar lección		the optic disk has no photorecepters, therefore creating a blind spot in the vision
optic nerve empezar lección		nerves that send the informationcollected by the eye to the brain
choroid empezar lección		connectibe tissue that lies between the retina and the sclera
macula empezar lección		area in the center of the retina that is responsible for high acuity in the center of our vision
fovea empezar lección		dimple in the retina that has 100% accurate vision because it consists only of cone cells

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