words worth knowing- structure of the eye

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sākt mācīties

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

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