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the clear tissue that covers the front of the eye and protects the eye


an opening in the eye which lets the light enter the eye


a circular structure that surrounds the pupil and regulates the amount of light entering the eye (comes in different colors)


a flexible structure that focuses the light


a layer of receptor cells that line the back of the eye


can see nearby objects clearly


can see object far away clearly


membrane that vibrates when sound strikes it


snail-shaped tube that is lined with receptor cells that respond to sound

semicircular canal

structures in your ear that are responsible for your sense of balance

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