MAP special senses 7b

Front

Cornea

Back

"Window to the Eye"; where the sclera becomes clear to allow light through.

Front

Aqueous Humor

Back

Watery fluid behind the cornea and in front of iris; helps keep the shape of the cornea.

Front

Pupil

Back

Hole created by the iris; allows light through to the lens.

Front

Iris

Back

Colored portion of the eye; has small muscles that can change the size of the pupil to regulate how much light gets in.

Front

Lens

Back

Changes shape (accommodation) to refract light and focus it on the retina.

Front

Ciliary Body

Back

Attached to lens by suspensory ligaments; the ligaments pull on the lens to change its shape for focusing; also secretes the aqueous humor.

Front

Choroid

Back

Contains melanin to help absorb unwanted light from reaching the retina.

Front

Retina

Back

Contains photoreceptors where light is translated (transduced) to electrical impulses the brain can understand. Very Fragile!

Front

Sclera

Back

White part of the eye; provides structure and protection.

Front

Optic Nerve

Back

Carries translated impulses back to the occipital lobe for integration.