Cornea optic nerve vitreous humor retina optic disc blind spot choroid tapetum lucidum sclera aqueous humor suspensory ligaments lens ciliary body pupil iris provided by dissection 101. To learn about how your eyes work, you can dissect, or take apart, a cows eye. Using diagrams and clayplaydoh, students can create a. A teenage narrator dissects a real cow eye with optic nerve attached in a 12part flash video. Cow eye powerpoint quiz continue student the retina through a process called accommodation. Record 3 observations you made when you examined the surface of the eye. How many more muscles does a human eye have than a cows eye. Visit the website of the famed san francisco exploratorium at search for. What is the only part of the eye that has blood in it. What is one major difference between a cows eye and a humans eye. Woman pulls parasitic cattle eye worm from her own eye this was the firstknown time the parasite has made the jump from cows to humans. What kinds of textual aids does this website have that your textbook did not. Observation of cow eye dissection structure observations interior of anterior segment black substance and liquid came out when the cornea was cut open. By dissecting and examining the anatomy of a preserved cow eye, you can learn how your own eye forms images of the world around you and sends these images to your brain.
Other questions may lead into the next activity of a cow eye dissection. You will need the pattern pages printed out on card stock or vellum, scissors or an xacto knife. If everything else is finished, read through this information to familarize yourself with the dissection process. Cow s eye dissection page 6 now take a look at the rest of the eye. Contains detailed instructions, images and an image for labeling the parts of the eye, such as the retina. Click watch online answer the questions as you watch each video. If you try this at home, wash your hands after the dissection. One eye of choice for dissection, that closely resembles the human eye, is that of the sheep. When we think about objects that respond to magnets, fruit usually doesnt come to mind. What is one ma j or difference between a cows eye and a humans eye. B if your budget does not allow for each student to conduct a cows eye dissection, then divide students into groups or conduct the dissection as a demonstration.
In this video, one of our staff explainers demonstrates a cow eye dissection. Jan 25, 2010 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. Also includes an eye diagram and illustrations that show how the eye refracts light and sends messages to the optic nerve. Explainer cow eye dissection i video 20 i exploratorium. Youll notice one or two green markings on one side.
Introduce students to the concept of visual perception by way of optical illusion and gross anatomy. Woman pulls parasitic cattle eye worm from her own eye. Photo 1 lateral view of the exterior eye data table 5. Download stepbystep instructions pdf for doing your own cows eye dissection. Instructions include an eye diagram, a glossary, and color photos for each. The mammalian eye consists of many specialized cells and tissues that make up several different structures. Cow eye dissection lab lowell middlesex academy charter. 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. In this animal dissection instructional activity, students identify the structure of an eyeball by cutting open a cow eye and observing the insides. Apart from the size differences, a cow and a human eye are quite similar in overall structure.
This pig heart dissection lab answer key will contain an overall description from the item, the name anatomy lab cow heart dissection answer key. Before allowing students to begin the dissection activity, provide them with clear instructions and expectations. The most noticeable part of the eye is the large mass of gray tissue that surrounds the posterior back of the eye and is attached to the. Learn how to dissect a cow s eye in your classroom. Cows eye dissection eye diagram cow eyes, human anatomy. Jun 22, 2016 on this page you can read or download biology practicals the eye in pdf format.
The iris is a cow eyeball is almost always brown, while human irises come in a variety of colors. A key difference is the shape of the pupil, which is oval in a cow eyeball and round in a human eye. On the inside of the back half of the eyeball, you can see some blood. At the exploratorium, we dissect cows eyes to show people how an eye works. And naturally, since the video was not designed to discuss any of the more advanced psychological issues involved in sensation and perception they spent more time discussing the iris, pupil, and the tapetum in animals since it was cow eye. Dissection tray scalpel dissection scissors dissection probe tray of water. Obtain a cow eye, dissection tray, and a bamboo stick to point out structures. Anatomy corner cow eye dissection exploratorium cow eye dissection wormwatch virtual worm tour classroom 2. Instructions include an eye diagram, a glossary, and color photos for each step. Cow eyes are bigger than human eyes and their pupil shapes differ from one another. On this page you can read or download practicals on the eye grade12 life sciences in pdf format. Review with them the safety instructions indicated in the safety section above and. Why do you think we are going to dissect a cows eye. We have examined the exploratoriums explainer program to understand the impact it has had on the teenagers who have participated in it.
External anatomy of the cow eye feature description extrinsic eye muscles six different muscles attached to the posterior surface of the eyeball that connect it to the bony orbit of the skull optic nerve nerve located posteriorly and medially. Sheep eye dissection procedures the anatomy of the human eye can be better shown and understood by the actual dissection of an eye. Mar 22, 2015 the cow eye dissection is a great lesson to use as part of your unit on the nervous system and the five senses. There are several different ways you can use this lesson in the classroom. A quick tutorial a very quick version of the sheep eye dissection done in class.
Although not discussed in the video, the online pdf did discuss the significance of rods and cones. Learn cow eye anatomy with free interactive flashcards. In this investigation, you identify the structures of a cow eye and learn their functions. You can use this in your classroom as a replacement from an actual dissection, or as a warmup before and actual dissection. Bulging of the lens, for closer objects, bends the light rays more. This cow eye dissection kit comes with everything you need to conduct a lab examination. Obtain a dissecting tray, scalpel, dissecting scissors, and one fresh cow eye from the supply. Analysis of visual function gross anatomy lab objective. To get started, watch the youtube video cows eye dissection. Cow eye dissection lab if everything else is finished, read through this information to familarize yourself with the dissection process.
The pri mary focus of our study was not on what the program accomplishes for the museum, but rather on how this program, in the short and long run, has in fluenced teenagers lives. Cows eye dissection exploratorium youll be using a scalpel or a razor to cut the cows eye. Choose from 500 different sets of cow eye anatomy flashcards on quizlet. A web site sponsored by the san francisco exploratorium museum. I am delivering a movie for itunes via a distributor itunes require. The blue is the cornea, which starts out clear but becomes cloudy after death.
The eye itself is a hollow ball, roughly spherical in shape. By using the sheep brain and cow eye, learning becomes easier. Most popular documents from university of west alabama. In this investigation, you identify the structures of a. Cows eye dissection i exploratorium video dailymotion. How are the muscles of the human eye different than those of the cows eye. This is a kit for cutting, folding, and taping paper to make a model of the human ear. This video shows and explains a dissection with one of our staff explainers. Identify the sclera, the outer layer of tough, white dense irregular connective tissue. The entire lab manual for that course which contains lots of useful. Human anatomy chart eye anatomy anatomy study animal anatomy human eye diagram diagram of the eye anatomy and physiology quiz human anatomy picture cow eyes. Student lab guide for dissecting a cow or a sheep eye. How many more muscles does a human eye have than a cow s eye. Cows eye dissection exploratorium cows eye dissection page 5 the back of the eye is.
Differences between the two eye types will be mentioned as the dissection is completed. Anatomy corner cow eye dissection exploratorium cow eye dissection wormwatch virtual. The large size of organs allows for the detailed study of key mammalian organs and permits a clearer view and understanding on how these vital structures work. There are numerous grayishpink extrinsic eye muscles attached to the. Cows eye dissection page 6 now take a look at the rest of the eye. Eye dissection a possible introduction to the activity can also include a discussion on model organisms. Brain and eyeball dissection lab report gabrielle warner introduction why are the sheep brain and cow eye used to study anatomy. The white part is the sclera, the outer covering of the eyeball. Cow eye dissection is popular because of how similar a cow s eye is to the human eye. If you dont see any interesting for you, use our search form on bottom v. In this fascinating workshop we will dissect a cows eye to demonstrate how every layer of an eye. May 22, 2012 at the exploratorium, we dissect cow eyes to show people how an eye functions, and look at the parts that make up an eye. The first section of this course will focus on dissecting the cow eye while introducing.
This web site shows photos and videos of a dissection. The cornea is a semitranslucent milky color, relatively thick and tough vitreous body the vitreous body was semitranslucent with a jelly like consistency lens the lens was durable, thick. Cow eye dissection lab lowell middlesex academy charter school. The structures have certain functions and together, they form images that are interpreted by the brain. First, identify the most external structures of the eye. Core biology practicals you will need to know these. Virtual dissection virtual dissection library home at.
Download stepbystep instructions pdf file for doing your own cows eye dissection. This handson dissection introduces students to the features of the eye and provides a detailed study of internal structures and physiology. What is one major difference between a cow s eye and a humans eye. What is the function of the fat that surrounds the eye. At the exploratorium, we dissect cow eyes to show people how an eye functions, and look at the parts that make up an eye. Use a scalpel to explore the amazing ways in which a cow s eye works. Virtual dissection virtual dissection library home at fox. Instructions include an eye diagram, a glossary, and color. How are the muscles of the human eye different than those of the cow s eye. Also, the cow eyes can be rather slippery, so use caution when handling and cutting them. Dissection of the cow eye please make sure to wear gloves and safety glasses when you are dissecting, and make sure to clean up thoroughly after the lab. Select, watch step 1 video but, choose watch all steps instead. Whenever you handle raw meat whether its a cows eye. I am a hands on learner and when i can touch or see things i am able to make connections.
This video was put together using clips from the grade 10 science class at wss. Learners discover the anatomy of a human body by dissecting a cows eye. What is the term for a clear fluid that helps the cornea keep its rounded shape. Day 98 eye dissection lab easy peasy allinone high school. Virtual dissection nursing assistant resources library home at. They dissect cow eyes to show the functions similar to a human eye.
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