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At the Exploratorium, we dissect cows’ eyes to show people how an eye works. This Web site shows photos and videos of a dissection. If you try this at home, wash your hands after the dissection. Wear latex gloves if you have cuts in your hands.
- COW’S EYE dissection
When the cow was alive, the cornea was clear. In your cow’s...
- Eye diagram
Cow's Eye Dissection Diagram. Cow's Eye Dissection Diagram....
- step 1
A tough, clear covering over the iris and the pupil that...
- COW’S EYE dissection
- Step-by-Step Instructions
- Here’s what you need:
- Here’s where to get cows’ eyes:
- Here’s what you do:
- Clean-up
- Glossary
One way to figure out how something works is to look inside it. To learn about how your eyes work, you can dissect, or take apart, a cow’s eye. Safety first! You’ll be using a scalpel or a razor to cut the cow’s eye. Be careful. A scalpel or razor can cut you as easily as it cuts the cow’s eye. Whenever you handle raw meat (whether it’s a cow’s eye...
One cow’s eye for every two participants One single-edged razor blade or scalpel for every two participants Scissors (optional) Wax paper and paper towels Plastic garbage bag A cutting board or other surface on which you can cut A sheet of newspaper Soap, water, and paper towels for cleaning up
You can order cows’ eyes at a butcher shop or purchase them directly from a slaughterhouse. Try to get eyes with the muscles and fat still attached. If possible pick up the cows’ eyes the day of the dissection; eyes are easier to cut when they are fresh. AQUEOUS HUMOR RETINA CORNEA PUPIL IRIS LENS VITREOUS HUMOR SCLERA BLIND SPOT OPTIC NERVE TAPETU...
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 aliv...
When you’re done dissecting the cow’s eye, wrap all the pieces of the eye in plastic and throw them away. If you used a razor blade, dispose of it properly. A razor blade is only good for one or two dissections.
aqueous humor A clear fluid that helps the cornea keep its rounded shape. blind spot 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. cones One kind of light-sensitive cell in the retina. Cones give you color vision in bright light. cornea A tough, clear c...
Learn how to dissect a cow's eye in your classroom. This resource includes: a step-by-step, hints and tips, a cow eye primer, and a glossary of terms. Cow's Eye Dissection | Exploratorium
Cow's Eye Dissection Diagram. Cow's Eye Dissection Diagram. Watch, Learn & Do a cow's eye dissection ... The Exploratorium is a 501(c)(3) nonprofit organization. Our ...
A tough, clear covering over the iris and the pupil that helps protect the eye. Light bends as it passes through the cornea. This is the first step in making an image on the retina. The cornea begins bending light to make an image; the lens finishes the job. Learn how to dissect a cow's eye in your classroom.
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Learn how to dissect a cow's eye in your classroom. This resource includes: a step-by-step, hints and tips, a cow eye primer, and a glossary of terms. Cow's Eye Dissection - Experimenting with a Lens
