words worth knowing- structure of the eye

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commencer à apprendre

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

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