Place the eye on the dissecting board and examine the outside of the. The black, anterior part of the choroid that looks like the underside of a mushroom is the ciliary body. Also, it is the attachment point of the muscles that allow the eye to move. The anatomy of the human eye can be better shown and understood by the actual dissection of an eye. Youve seen them on holiday cards, but now its time for the real thing. This tough, outer covering of the eyeball has fat and muscle attached to it 2. In this experiment, students will dissect a cows eye to learn the anatomy of the eye, and compare and contrast a cows eye and a human eye. The cow eye is ideal because its large size makes for easy identification of the eyes components.
Stepbystep instructions for a science lab to dissect a cow eye. High density polyethylene a simple method duration. The carolina mammal eye dissection guide is a general set of instructions for dissecting mammal eyes. Thats right a cow eye has another part called the tapetum and this allows the cow to see in the dark. It is likely that your eye specimen has fat and connecting tissue that will. Student lab guide for dissecting a cow or a sheep eye. Cows eye dissection instructions linkedin slideshare. My students need scalpels, organs to dissect, a lung to investigate, plant kits, molecular models, and test papers to use in science lab for this year. Watch a science museum of virginia educator conduct our popular cow eye dissection demo. Learn cow eye dissection with free interactive flashcards. Turn the specimen so the cornea is on the left and the optic nerve is on your right. Preserved cows eye forceps dissection probes dissection scissors dissection tray vinyl or latex gloves apron or teeshirt paper towels plastic trash bag external features of the eye a.
The original pump that is the drumbeat of our lives is an amazing structure. A brief, descriptive walkthrough of a cow eye dissection. Use the point of a very sharp razor blade to make a small cut through the sclera. Lay a few pages of newspaper on the bench and put the dissecting board on them. Before dissecting the eye specimen, look at all the anatomical features around the eye. Methods and materials cow eye, dissection tray, safety equipment, and dissection tools are used. Cows eye dissection prac report discussion aim conclusion our aim for this prac is to help us better understand the structure and functions of the eye by seeing it physically and applying our knowledge. You should be able to find the sclera, or the whites of the eye. Select a place to make an incision of the sclera midway between the cornea and optic nerve.
One eye of choice for dissection, that closely resembles the human eye, is that of. This is a quiz called cow eye dissection and was created by member avantitreasures787. This cow eye dissection kit comes with everything you need to conduct a lab examination. Thats the vitreous humor, a mixture of protein and water. Puncture the cornea with scissors or a scalpel, aqueous liquid should leak out. Cow eye dissection is popular because of how similar a cows eye is to the human eye.
Cornea optic nerve vitreous humor retina optic disc blind spot choroid tapetum lucidum sclera aqueous humor suspensory ligaments lens ciliary body. Locate the covering over the front of the eye, the cornea. Examine the different parts of the eye, such as the cornea at the front of the eye, the iris, the pupil, the sclera, the vitreous humor, the part where the optic nerve connects at the back of the eye, other connecting muscles and veins, and more. Cow eyes for dissection donorschoose project by mrs. This is cow eye dissection by escience labs on vimeo, the home for high quality videos and the people who love them. After removing the excess tissue, the sclera and optic nerve should be exposed but still intact. Your guide to dissection since 1817 dissecting an eye before dissection, allow the students to a have a good look at the eye and see if they can identify any parts of the eye. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Through observation and dissection, students learn about the structure of the eye. Learn how to dissect a cow s eye in your classroom.
Choroid coat this is the sclera longitudinal fissure optic chiasma cerebellum methods, observations and experiments. Youll be using a scalpel or a razor to cut the cows eye. Colored ring of muscle that changes the size of the pupil. Procedure cornea optic nerve fat muscle sclera cornea procedure continued on the next page. At the exploratorium, we dissect cow eyes to show people how an eye functions. Sheep eye dissection procedures the anatomy of the human eye can be better shown and understood by the actual dissection of an eye. Email embed facebook twitter classroom upgrade to pro today.
Its a clear lump about the size and shape of a squashed marble. Cows eye dissection prac report by emillie neil on prezi. The eye processes the light through photoreceptors located in the eye that send signals to the brain and tells us what we are seeing. One eye of choice for dissection, that closely resembles. B if your budget does not allow for each student to conduct a cows. Students dissect a cow eye as part of a unit on anatomy or the senses. All terms that you need to know are in bold italics the first time they are listed. This guide contains step by step instructions on how to cut the eye and identify the major features, such as the cornea, sclera, retina, vitreous humor, lens, and optic nerve. Dissection of a kidney mrs scrivens virtual classroom. A scalpel or razor can cut you as easily as it cuts the cows eye. Choose from 500 different sets of cow eye dissection flashcards on quizlet.
Get this resource as part of a bundle and save up to 41%. Photo 1 lateral view of the exterior eye data table 5. The cow eye is carefully dichotomized, studying each area and how it is attached and utilized. Methods and materials cow eye dissection tray safety. You need to get 100% to score the 11 points available. The white part is the sclera, the outer covering of the eyeball. This tough, outer covering of the eyeball has fat and muscle attached to it. Tell three observations you made when you examined the surface of the eye. Use a scalpel to explore the amazing ways in which a cows eye works. At the exploratorium, we dissect cow eyes to show people how an eye functions, and look at the parts that make up an eye.