The Human Eye

Vitreous Humor

The transparent, jelly like substance that fills the eyeball behind the lens.

Optic Nerve

The nerve that connects the eye to the brain.

Blind Spot

Also called the optic disc is a point on the retina that's not sensitive to light. The optic nerve enters the eye here.

Fovea

A place on the eye that gives the sharpest vision. They're are 10,000 cone cells at this point.

Retina

A layer of cells at the back of the eye that is sensitive to light, and receives the images of things looked at.

Choroid

The layer of cells between the retina and sclera.

Sclera

The tuff, white, outer membrane of the eye.

Iris

The colored part of the eye around the pupil.

Lens

The part of the eye that focuses light rays upon the bottom.

Pupil

The opening in the center of the Iris that looks like a black spot. It is the only place where light can enter the eye. Its size is regulated by the expansion and contraction of the Iris.

Cornea

The transparent transparent part of the outer coat of the eyeball. It covers the Iris and pupil.

Aqueous Humor

Watery liquid which fills the space in the eye between the cornea and lens.

Muscle Fiber

Fibers that are attatched to the lens. They change the shape of the lens allowing the eye to focus.

The transparent, jellylike substance that fills the eyeball behind the lens.

Vitreous Humor

The nerve that connects the eye to the brain.

Optic Nerve

Also called the optic disc is a point on the retina that's not sensitive to light. The optic nerve enters the eye here.

Blind Spot

A place on the retina that gives the sharpest vision. There are 10,000 cone cells at this point.

Fovea

A layer of cells at the back of the eye that is sensitive to light, and receives the images of things looked at.

Retina

The layer of cells between the retina and sclera.

Choroid

The tuff, white , outer membrane of the eye.

Sclera

The colored part of the eye around the pupil.

Iris

The part of the eye that focuses light rays upon the retina.

Lens

The opening in the center of the Iris that looks like a black spot. It is the only part of the eye where light can enter the eye. Its size is regulated by the expansion and contraction of the Iris.

Pupil

The transparent part of the outer coat of the eyeball. It covers the Iris and Pupil.

Cornea

Watery liquid which fills the space in the eye between the cornea and lens.

Aqueous Humor

Fibers that are attatched to the lens. They change the shape of the lens allowing the eye to focus.

Muscle Fiber

True or False: Sight is the most precious sense.

True.1

True or False: Organ of thinking.

False. Sight. 1

True or False: The eye is 2in. in diameter.

False. 1inch. 2

True or False: It is the most precious organ.

True. 2

True or False: The eye can see stars that are far away or a tiny grain of sand but can't quickly adjust between a distant and close object.

False. It can. 3

True or False: Many people fear blindness.

True.3

True or False: The eye doesn't actually see objects but the light they reflect.

True. 4

The eye can see in ______ light and ___ light but not in __ light.

Btight, dim, and no. Fill in the blank 1.

The eyes change ____ rays into ____ signals. The signals are then sent to the ___ which interupt them as visual images.

Light, electriacal, and brain. Fill in the blank 2

The ___ or socket is the ___ where the eyeball is set.

Orbit, Cavity. Fill in the blank 3

It is a protective ___ shaped ____ in the skull.

Cone, cavity. Fill in the blank 4.

True or False: The ridges form the brow and the cheekbone.

True. 5