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Homeostasis #4

The Eye: Structures and Functions

StructureFunction
Aqueous Humor A clear, watery fluid that fills the front part of the eye between the cornea, lens, and iris.
Choroid The middle layer of the eyeball, which contains veins and arteries that furnish nourishment to the eye, especially the retina.
Conjunctiva A mucous membrane that lines the eyelids and covers the front part of the eyeball.
Cornea The transparent outer portion of the eyeball that transmits light to the retina.
Iris The colored, circular part of the eye in front of the lens. It controls the size of the pupil.
Lens The transparent disc in the middle of the eye behind the puil that brings rays of light into focus on the retina.
Optic Nerve The imortant nerve that carries messages from the retina to the brain.
Pupil The circular opening at the center of the iris that controls the amount of light allowed into the eye.
Retina The inner layer of the eye containing light-sensitive cells that connect with the brain through the optic nerve.
Sclera The white part of the eye that is a tough coating that, along with the cornea, forms the external protective coat of the eye.
Vitreous Body A colorless mass of soft, gelatin-like meterial that fills the eyeball behind the lens.
Created by: WisemanLeo
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