The eye itself is a hollow ball, roughly spherical in shape. Cow s eye dissection page 6 now take a look at the rest of the eye. Also includes an eye diagram and illustrations that show how the eye refracts light and sends messages to the optic nerve. Cows eye dissection page 6 now take a look at the rest of the eye. Explainer cow eye dissection i video 20 i exploratorium. Brain and eyeball dissection lab report gabrielle warner introduction why are the sheep brain and cow eye used to study anatomy. What is the term for a clear fluid that helps the cornea keep its rounded shape. Most popular documents from university of west alabama. If everything else is finished, read through this information to familarize yourself with the dissection process. 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. 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. When we think about objects that respond to magnets, fruit usually doesnt come to mind. Dissection tray scalpel dissection scissors dissection probe tray of water. Cows eye dissection i exploratorium video dailymotion.
What is the function of the fat that surrounds the eye. Woman pulls parasitic cattle eye worm from her own eye. Photo 1 lateral view of the exterior eye data table 5. Virtual dissection virtual dissection library home at. Download stepbystep instructions pdf for doing your own cows eye dissection.
Differences between the two eye types will be mentioned as the dissection is completed. Before allowing students to begin the dissection activity, provide them with clear instructions and expectations. Core biology practicals you will need to know these. First, identify the most external structures of the eye. A key difference is the shape of the pupil, which is oval in a cow eyeball and round in a human eye. Obtain a dissecting tray, scalpel, dissecting scissors, and one fresh cow eye from the supply. The eyes contain receptors for light stimuli, and they are well protected by the surrounding skull bones and eyelids. In this investigation, you identify the structures of a cow eye and learn their functions. Using diagrams and clayplaydoh, students can create a. In this video, one of our staff explainers demonstrates a cow eye dissection.
Learners discover the anatomy of a human body by dissecting a cows eye. Learn how to dissect a cow s eye in your classroom. 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. Sheep eye dissection procedures the anatomy of the human eye can be better shown and understood by the actual dissection of an eye. If you try this at home, wash your hands after the dissection.
Download stepbystep instructions pdf file for doing your own cows eye dissection. A teenage narrator dissects a real cow eye with optic nerve attached in a 12part flash video. Use a scalpel to explore the amazing ways in which a cow s eye works. In this fascinating workshop we will dissect a cows eye to demonstrate how every layer of an eye. Learn cow eye anatomy with free interactive flashcards. How many more muscles does a human eye have than a cows eye. This video shows and explains a dissection with one of our staff explainers. 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. Cow eye dissection lab if everything else is finished, read through this information to familarize yourself with the dissection process. Anatomy corner cow eye dissection exploratorium cow eye dissection wormwatch virtual. I am a hands on learner and when i can touch or see things i am able to make connections. Virtual dissection nursing assistant resources library home at. Cow eye dissection lab lowell middlesex academy charter.
This video was put together using clips from the grade 10 science class at wss. At the exploratorium, we dissect cows eyes to show people how an eye works. Student lab guide for dissecting a cow or a sheep eye. On this page you can read or download practicals on the eye grade12 life sciences in pdf format. There are several different ways you can use this lesson in the classroom. 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. Analysis of visual function gross anatomy lab objective. 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.
Day 98 eye dissection lab easy peasy allinone high school. Cows eye dissection exploratorium youll be using a scalpel or a razor to cut the cows eye. Cow eyes are bigger than human eyes and their pupil shapes differ from one another. 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 cow eye dissection is a great lesson to use as part of your unit on the nervous system and the five senses. You can use this in your classroom as a replacement from an actual dissection, or as a warmup before and actual dissection. How are the muscles of the human eye different than those of the cows eye. Virtual dissection virtual dissection library home at fox. By using the sheep brain and cow eye, learning becomes easier. Cow eye powerpoint quiz continue student the retina through a process called accommodation. One eye of choice for dissection, that closely resembles the human eye, is that of the sheep. On the inside of the back half of the eyeball, you can see some blood.
If this is the case, have them move on to the eye model and comparative neuroanatomy activities. 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. Apart from the size differences, a cow and a human eye are quite similar in overall structure. 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. Other questions may lead into the next activity of a cow eye dissection.
Instructions include an eye diagram, a glossary, and color. A web site sponsored by the san francisco exploratorium museum. What is one ma j or difference between a cows eye and a humans eye. What is the only part of the eye that has blood in it. In this investigation, you identify the structures of a. Youll notice one or two green markings on one side. Visit the website of the famed san francisco exploratorium at search for. Why do you think we are going to dissect a cows eye. The blue is the cornea, which starts out clear but becomes cloudy after death.
The white part is the sclera, the outer covering of the eyeball. Introduce students to the concept of visual perception by way of optical illusion and gross anatomy. Review with them the safety instructions indicated in the safety section above and. In this animal dissection instructional activity, students identify the structure of an eyeball by cutting open a cow eye and observing the insides. This pig heart dissection lab answer key will contain an overall description from the item, the name anatomy lab cow heart dissection answer key. We have examined the exploratoriums explainer program to understand the impact it has had on the teenagers who have participated in it. What is one major difference between a cow s eye and a humans eye. Eye dissection a possible introduction to the activity can also include a discussion on model organisms. What is one major difference between a cows eye and a humans eye. The structures have certain functions and together, they form images that are interpreted by the brain.
Whenever you handle raw meat whether its a cows eye. You will need the pattern pages printed out on card stock or vellum, scissors or an xacto knife. Jun 22, 2016 on this page you can read or download biology practicals the eye in pdf format. Instructions include an eye diagram, a glossary, and color photos for each step. There are numerous grayishpink extrinsic eye muscles attached to the. 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. Also, the cow eyes can be rather slippery, so use caution when handling and cutting them. Observation of cow eye dissection structure observations interior of anterior segment black substance and liquid came out when the cornea was cut open.
Anatomy corner cow eye dissection exploratorium cow eye dissection wormwatch virtual worm tour classroom 2. The iris is a cow eyeball is almost always brown, while human irises come in a variety of colors. Click watch online answer the questions as you watch each video. To get started, watch the youtube video cows eye dissection.
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. 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. What kinds of textual aids does this website have that your textbook did not. This is a kit for cutting, folding, and taping paper to make a model of the human ear. 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. Cows eye dissection exploratorium cows eye dissection page 5 the back of the eye is. The first section of this course will focus on dissecting the cow eye while introducing. This cow eye dissection kit comes with everything you need to conduct a lab examination. Record 3 observations you made when you examined the surface of the eye. This handson dissection introduces students to the features of the eye and provides a detailed study of internal structures and physiology.
Cow eye dissection lab lowell middlesex academy charter school. To learn about how your eyes work, you can dissect, or take apart, a cows eye. Contains detailed instructions, images and an image for labeling the parts of the eye, such as the retina. Cow eye dissection is popular because of how similar a cow s eye is to the human eye. Although not discussed in the video, the online pdf did discuss the significance of rods and cones. 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.
This web site shows photos and videos of a dissection. The mammalian eye consists of many specialized cells and tissues that make up several different structures. If the vitreous humor is still in the eyeball, empty it out. 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. I am delivering a movie for itunes via a distributor itunes require. 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. 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. Select, watch step 1 video but, choose watch all steps instead. How many more muscles does a human eye have than a cow s eye.
They dissect cow eyes to show the functions similar to a human eye. Instructions include an eye diagram, a glossary, and color photos for each. How are the muscles of the human eye different than those of the cow s eye. If you dont see any interesting for you, use our search form on bottom v. Bulging of the lens, for closer objects, bends the light rays more. A quick tutorial a very quick version of the sheep eye dissection done in class.
1078 447 821 1016 766 1371 95 588 1100 993 1547 1428 1475 806 469 589 1531 685 725 1263 294 211 1335 695 801 876 260 77 1102 128 215 1494 924 1072 1408 1463 17 1246 652 1392 1317 986 190 818 752