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Eye structure

Lateral Rectus Muscle that turns the eyeball outward.
Retina Contains visual receptor cells (photoreceptors). Senses light and creates impulses sent through the optic nerve.
Choroid Coat Blood vessels found here for nourishment. Help keep the inside of the eye dark.
Sclera White portion of the eye. Protects the eye and is an attachment for the extrinsic muscles.
Vitreous humor Jelly-like fluid filling the central cavity of the eye.
Fovea centralis Region of the retina that produces the sharpest vision.
Optic Nerve Pierce's the Sclera, carrying messages to and from the eye.
Optic disc Nerve fibers from retina leave the eye and become part of the optic nerve. Artery and vein pass through here.
Posterior cavity Space enclosed by the lens, ciliary body, and retina filled with vitreous humor.
Medial rectus Muscle that functions in bringing the pupil closer to the midline of the body.
Ciliary body Forms internal ring around the eye, and secrets aqueous humor.
Suspensory ligaments Connect ciliary body to the eye's lens.
Iris Colored part of eye that regulates the amount of light entering the eye. When bright light, closes the pupil to let in less light and vice versa.
Lens Behind iris and pupil, composed of specialized epithelial cells. Foucuses light rays into the retina.
Pupil Circular opening in the center of the iris. Changes size to adjust to the amount of light.
Cornea Window of the eye that helps focus entering light rays. Few cells and no blood vessels.
Aqueous humor Watery fluid filling the space between the cornea and lens, providing nutrients and maintaining the shape of the front of the eye.
Anterior chamber Found between cornea and iris.
Posterior chamber Found between the iris and vitreous humor, occupied by the lens.
Created by: johncl



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