The blue is the cornea, which starts out clear but becomes cloudy after death. The cow eye dissection lab what are the structures of the mammalian eye and how do they function. Ciliary muscles produces aqueous humor and controls lens shape. Cut away the fat and muscle, this may only be necessary if fat is covering the cornea of the eye and is in your way. It is designed to supplement a real dissection or used for students who cannot complete the laboratory experience.
Do not allow your laboratory partner to hold the eyeball while you dissect. Cow eye use the point of a scissors or a scalpel to make an incision through the layers of the eye capsule similar to figure 1. The structures have certain functions and together, they form images that are interpreted by the brain. You and your group will complete this worksheet as you are doing the cow eye. If this is the case, have them move on to the eye model and comparative neuroanatomy activities.
Lens bends light rays to the back of the eye retina. The carolina mammal eye dissection guide is a general set of instructions for dissecting mammal eyes. 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. However, we are going to divide the eye into front and back hemispheres and examine each half separately. Virtual dissection virtual dissection library resources. 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. Day 98 eye dissection lab easy peasy allinone high school. Carolina tm mammal kidney dissection guide overview the carolina cow eye dissection. This is the optic nerve, and it sends the images collected in the eye to the brain. This handson dissection introduces students to the features of the eye and provides a detailed study of internal structures and physiology. Cow eye dissection and eye anatomy2 labs w full color photos.
Student lab guide for dissecting a cow or a sheep eye. To learn about how your eyes work, you can dissect, or take apart, a cows eye. Cow eye dissection use this presentation as your virtual cow eye dissection, or use it as a guide for your actual classroom dissection recommended. Cows eye dissection page 6 now take a look at the rest of the eye. Name the three layers you sliced through when you cut across the top of the eye. If the vitreous humor is still in the eyeball, empty it out. Contains detailed instructions, images and an image for labeling the parts of the eye, such as the retina. View lab report cow eye dissection worksheet from science na at monarch high school. Be careful while dissecting the eyeball because the sclera is.
You can order cows eyes at a butcher shop or purchase them. What is the purpose of the fatty tissue surrounding the eye. Cow eye dissection the anatomy of the cow eye and sheep eye is similar to that of the human eye. This will allow us to examine the lens and the ligaments that hold it in place in the front half and to view most of the retina, still intact in the back half of the eye. Cow eye dissection is popular because of how similar a cow s eye is to the human 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. Cat dissections online virtual frog dissection kit clam dissection virtual mouse necropsy cockroach dissection the virtual pig dissection cows eye dissection rat dissection guide i and ii. Analysis of visual function gross anatomy lab objective. One eye of choice for dissection, that closely resembles the human eye, is that of the sheep. Flip the eye over to find the optic nerve where it exits out the back of the eye. 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. First, identify the most external structures of the eye. The black, anterior part of the choroid that looks like the underside of a mushroom is the ciliary body. On the posterior side of the eye, nestled in the fat and muscle tissue, there is a noticeably round protuberance that feels stiffer than the surrounding tissue.
This step by step guide shows the dissection of a cow eye in images. Use small strokes with the scalpel, and cut away from your. Learn cow eye dissection with free interactive flashcards. The first section of this course will focus on dissecting the cow eye while introducing. Alternatives to dissection websites humane society of the. In this lab, we set out to dissect a cows eye and identify the different parts of the eye. We use cookies to provide you with a great user experience.
It contains smooth muscle that changes the shape of the lens so that the eye can focus on objects in the near distance. The mammalian eye consists of many specialized cells and tissues that make up several different structures. Learn how to dissect a cow s eye in your classroom. See more ideas about cow eyes, parts of the eye and photosynthesis worksheet. Please allow 30 minutes to 6 hours time depending upon the size of the video. Instructions include an eye diagram, a glossary, and color photos for each.
There will be a specific guide in the file provided. For improved accessibility in moving files, please use the move to dialog option found in the menu. Download stepbystep instructions pdf file for doing your own cows eye dissection. Choose from 500 different sets of cow eye dissection flashcards on quizlet. This video shows and explains a dissection with one of our staff explainers. On this page you can read or download biology practicals the eye in pdf format. The white part is the sclera, the outer covering of the eyeball. Feb 04, 2014 cow eye dissection for educational use. Dissection tray scalpel dissection scissors dissection probe tray of water. How are the muscles of the human eye different than those of the cow s eye. In this lesson, we are going to introduce the students to the structure of eyes by cows eye dissection. Cut through the eye as shown on the instruction sheet. This is a quiz called cow eye dissection and was created by member avantitreasures787. Chp 12 cow eye dissection report lab experiment cow eye dissection 1 identify the following structures cornea a clear covering over the front of the.
Learn vocabulary, terms, and more with flashcards, games, and other study tools. Scalpels and razors can cut you as easily as they cut cow eyes. The most noticeable part of the eye is the large mass of gray tissue that surrounds the posterior of the eye and. Chp 12 cow eye dissection report lab experiment cow eye. Sheep eye dissection procedures the anatomy of the human eye can be better shown and understood by the actual dissection of an eye. Cow s eye dissection do your own download stepbystep instructions pdf file for doing your own cows eye dissection. If you are following along at school, please be careful. Cow eye dissection post lab questions free pdf file sharing.
Before allowing students to begin the dissection activity, provide them with clear instructions and. The cow eye is ideal because its large size makes for easy identification of the eye s components. Procedure cornea optic nerve fat muscle sclera cornea procedure continued on the next page. Citypass booklet save 45% or more on the exploratorium and four other san francisco experiences. Cow eye dissection mbusd internet usage disclaimer. Download pdf use this simple, engaging dissection to teach your students about the eyes structures and their functions. View lab report pa 70 the cow eye dissection lab bella patrick.
If you dont see any interesting for you, use our search form on bottom v. Fat around the backside of the eye can be left alone. Bay observatory gallery in 1666, isaac newton managed to name seven colors he found in the suns light, and nearly 350. Match the following parts of the eye to their function. In your cows eye, the cornea may be cloudy or blue in color. This is cow eye dissection by escience labs on vimeo, the home for high quality videos and the people who love them. Cow eye dissection worksheet cow eye dissection directions. Explainer cow eye dissection i video 20 i exploratorium. Also, it is the attachment point of the muscles that allow the eye to move. When you cut the eyeball, a clear watery fluid leaked out. The kit provides a stepbystep student guide with labeled color images for 1 or 2 students to participate in an introductorylevel dissection activity that includes locating and identifying external and internal features of the eye.