Cow Eye Vocabulary

A clear flexible structure that makes an image on the eye's retina. The ___ is flexible so that it can change shape, focusing on objects that are close and far away.

• retina

• sclera

• lens

• pupil

a clear fluid that helps the cornea keep its rounded shape.

• lens

• optic nerve

• cones

• aqueous humor

the___ is the dark circle in the center of your iris. It's a hole that lets light into the inner eye. Human _____'s are round. Cow's _____'s are oval.

• sclera

• pupil

• vitreous humor

• tapetum

a muscle that controls how much light enters the eye. It is suspended between the cornea and the lens. A cow's ____ is brown. Human ____es come in many colors.

• iris

• lens

• pupil

• cornea

the place where all nerves from the retina join to form the optic nerve. Each eye has a blind spot where there are no light-sensitive cells.

• iris

• blind spot

• optic nerve

• cones

the bundle of nerve fibers that carry information from the retina to the brain.

• cornea

• pupil

• optic nerve

• retina

a tough, clear covering over the ires and the pupil that helps protect the eye. Light bends as it passes through the _____. The _____begins bending light to make an image; the lens finishes the job.

• lens

• pupil

• cornea

• aqueous humor

Tags

NGSS.MS-PS4-2

one kind of light-sensistive cell in the retina. Cones give you color vision in bright light.

• iris

• lens

• pupil

• cones

the colorful, shiny material located behind the retina. Found in animals with good night vision, the _____ reflects light back through the retina.

• retina

• lens

• pupil

• tapetum

the layer of light-sensitive cells at the back of the eye. The____ detects images focused by the cornea and the lens. The ____ is connected to the brain by the optic nerve.

• cornea

• lens

• retina

• pupil

Tags

NGSS.MS-LS1-2