A clear fluid that helps the cornea keep its rounded shape. Aqueous Humor A muscle that controls how much light enters the eye. It is suspended between the cornea and the lens. A iris is brown. Human irises come in many color, including brown, blue, green and gray. cow’s Iris It gives you your eye color! A clear, flexible structure that makes an image on the retina. The lens is flexible so that it can eye’s change shape, focusing on objects that are close up and objects that are far away. Lens The thick, clear jelly that helps give the eyeball its shape. Vitreous Humor The thick, tough, white outer covering of the eyeball. Sclera The colorful, shiny material located behind the retina. Found in animals with good night vision, the tapetum reflects light back through the retina. Tapetum The bundle of nerve fibers that carry information from the retina to the brain. Optic Nerve The place where the optic nerve leaves the retina. Each eye has a blind spot where there are no light- cells. Blind Spot In preparation for the actual cow eye dissection visit the following website and list the 13 steps with their descriptions. These steps will be followed during the dissection. Website: Step Step Title Step Description Number The Eye Examine the outside of the eye. See how many parts Cow’s of the eye you can identify. You should be able to find the whites (or 1 sclera), the tough, outer covering of the eyeball. You should also be able to identify the fat and muscle surrounding the eye. You should be able to find the covering over the front of the eye (the When cornea). the cow was alive, the cornea was clear. In your eye, the cornea cow’s may be cloudy. You may be able to look through the cornea and see the iris, the colored part of the eye, and the pupil, the dark oval in the middle of the iris. Cut away the fat and muscle. Without moving your head, look up. Muscles Move the
Aqueous Humor A clear fluid that helps the cornea keep its rounded shape. Iris A muscle that controls how much light enters the eye. It is suspended between the cornea and the lens. A cow’s iris is brown. Human irises come in many color, including brown, blue, green and gray. It gives you your eye color! Lens A clear, flexible structure that makes an image on the eye’s retina. The lens is flexible so that it can change shape, focusing on objects that are close up and objects that are far away. Vitreous Humor The thick, clear jelly that helps give the eyeball its shape. Sclera The thick, tough, white outer covering of the eyeball. Tapetum The colorful, shiny material located behind the retina. Found in animals with good night vision, the tapetum reflects light back through the retina. Optic Nerve The bundle of nerve fibers that carry information from the retina to the brain. Blind Spot The place where the optic nerve leaves the retina. Each eye has a blind spot where there are no cells. In preparation for the actual cow eye dissection visit the following website and list the 13 steps with their descriptions. These steps will be followed during the dissection. Website: Step Number Step Title Step Description 1 The Cow’s Eye Examine the outside of the eye. See how many parts of the eye you can identify. You should be able to find the whites (or sclera), the tough, outer covering of the eyeball. You should also be able to identify the fat and muscle surrounding the eye. You should be able to find the covering over the front of the eye (the cornea). When the cow was alive, the cornea was clear. In your cow’s eye, the cornea may be cloudy. You may be able to look through the cornea and see the iris, the colored part of the eye, and the pupil, the dark oval in the middle of the iris. Muscles Move the Cut away the fat and muscle. Without moving your head, look up. light-
Exploring%20the%20Anatomy%20of%20the%20Eye%20KEY.docx