Relier Pairs The eyesVersion en ligne The eyes par Alba Castellano Navarro 1 Lacrimal glands 2 Cristaline lens 3 Aqueous humour 4 Optic nerve 5 Iris 6 Eyebrows 7 Sclera 8 Eyelashes 9 Fovea 10 Pupil 11 Retina 12 Vitreous humour 13 Eyelid 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 the internal layer of the eyeball that contains photoreceptor cells called cones and rods. 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. Is an area of the retina with many cones. It is responsible for sharp vision. Is the opaque, white outer layer. The front part (cornea) is transparent. Are hairs that stop sweat from entering the eye. It is an elastic, transparent, biconvex structure behind the iris. Is a circular structure. Its colour varies from person to person. It is a transparent fluid between the cornea and the crystalline lens. Are hairs that grow out of the eyelids. They limit access to light and stop particles from entering the eyes. It is transparent, gelatinous fluid filling the eyeball. It transmits the information to the brain.
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