Matching Pairs The eyesOnline version The eyes by Alba Castellano Navarro 1 Optic nerve 2 Aqueous humour 3 Cristaline lens 4 Eyelashes 5 Pupil 6 Vitreous humour 7 Fovea 8 Lacrimal glands 9 Iris 10 Eyelid 11 Sclera 12 Retina 13 Eyebrows It transmits the information to the brain. Produce tears, which clean the eye and keep it moist. They also destroy bacteria. It is the hole in the center of the iris. It is a transparent fluid between the cornea and the crystalline lens. Is a circular structure. Its colour varies from person to person. Are folds of skin that are opened and closed by the eye orbit muscles. They prevent the eyeball from drying out and stop particles from entering. It is transparent, gelatinous fluid filling the eyeball. It is the internal layer of the eyeball that contains photoreceptor cells called cones and rods. Is an area of the retina with many cones. It is responsible for sharp vision. Are hairs that grow out of the eyelids. They limit access to light and stop particles from entering the eyes. It is an elastic, transparent, biconvex structure behind the iris. Is the opaque, white outer layer. The front part (cornea) is transparent. Are hairs that stop sweat from entering the eye.
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