Name some similarities between the human brain and the sheep brain. L2 studentpacket sheepbrainexploration project neuron. Sheep brains, although much smaller than human brains, have similar features and can be a valuable addition to anatomy studies. This guide is intended to lead you through the anatomy of the sheep brain dissection and also to make connections to the functional significance of the structures that you will locateand why brain injury might cause functional and behavioral changes. In the days between the dissection and the practical, you may come in to observe brains and further study the structures and locations. Ap biology sheep brain dissection lab 50 points directions.
I am a hands on learner and when i can touch or see things i am able to make connections. Dissection tools and trays, lab glasses, lab gloves, preserved specimen. Students learn about the structures of the brain through dissection and observation of this fascinating organ. Sheep brain dissection follow along with the steps in the exploratorium activity click on photo with your own specimen. Thus, it can sometimes be seen in two places, depending on the plane of dissection. Pick up dissection tray, dull probe, pins and labels obtain a sheep brain and share this with a partner or 2 rinse the sheep brain to remove.
Put on your plastic goggles to avoid getting any fluids in your eyes accidentally take out your dissecting tray and dissection kit and place on table out of reach of children or pets. It can divide the brain and any location as long as it. By using the sheep brain and cow eye, learning becomes easier. Dissection tools and tray, lab gloves, preserved sheep. The kit includes a stepbystep student guide with labeled color images for 1 or 2 students to participate in an introductorylevel lesson that includes locating and identifying external and internal features of the brain. Fullcolor photographs accurately depict the brain surface, ventral view, and sagittal section longitudinal section of the brain and show where arnd how to make incisions.
Learn the external and internal anatomy of sheep brains with hsts learning. Anatomy corner resource site for teachers and students of anatomy and physiology. Learn brain structure and function by dissection a sheep brain. These steps will need to be repeated prior to each laboratory session. Anatomy sheepbrain dissection lab dayton school district. Students make observations, learning about the structure and function of brain regions, white and gray matter. Refer to images, descriptions, and functions of parts of the brain as you proceed through this lab. Checkboxes are used to keep track of progress and each structure that can be found is described with its location in relation to other structures.
The pia mater is the thin, vascular layer that adheres to the surface of the brain. This dissection guide was revised october 2014 with improved instructions and color images for a better dissection and easier identification of internal and. During this lab i cut open a sheep brain and labeled all the divided structures that allow a sheep to survive and sustain life when everything worked as one. Being able to locate structures in the sheep brain will help you to understand the anatomy of the human brain as well. Make your final coronal cut immediately anterior to the splenium of the corpus callosum. Sheep brain dissection by gwinnett technical college on vimeo, the home for high quality videos and the people who love them.
The sheep brain is enclosed in a tough outer covering called the. Set the brain down so the flatter side, with the white spinal cord at one end, rests on the dissection pan. A pair of olfactory bulbs may be seen, one under each lobe of the frontal cortex. This is the url to a sheep dissection lab created by five students inthe bicollege haverford and bryn mawr community. Lecture notes brain structure and its origins brain and cognitive. Sheep brain dissection lab answer key samstercyrant. Often these two nerves are removed with the dura mater, but in this image they are still intact. Sheep brain dissection complete then hand in practical lab marks use the tpins you created at the beginning of the lab to label your half of brain without assistance from the teacher. We did a class dissection on them, and everyone had to do a different cut to each brain. Mammalian brains have many features in common so sheep brains are dissected to help understand the brains of other mammals as well. Dissection guide with instructions for dissecting a sheep brain.
Both the dorsal and ventral aspects of the hippocampus are readily apparent at this level. To begin get gloves and a rubber apron or lab coat. There are three layers of meninges the dura mater, the arachoid mater, and the pia mater. Before beginning inspection and dissection of the brain you should have these materials on hand. Submitting a text entry box, a website url, a media recording, or a file upload. Brain dissection for this lab you will be dissecting the. Its a little over 1 12 kg in weight and it contains enough specialised cells to allow us to think, make memory, sheep brain dissection. Cranial nerve i or olfactory bulb carries sensory information regarding smell to the cerebral cortex. Find quizzes, diagrams, and slide presentations on structures, functions, and systems.
In addition to the direction, the brain as a three dimensional object can be divided into three planes. Sheep brain dissection lab by melanie lewi on prezi. To supplement this lesson, visit s adventure ahead page. In the first two pictures you can see the dera, which kept all the parts of the brain together in one piece. The lab practical component of this lab will count for the remaining 40% of the lab grade. A fruit that come find the answers to these questions. Sheep brain dissection project guide hst learning center. Youll need a preserved sheep brain for the dissection. The structures have certain functions and together. Garbage bag for brain waste gloves newspaper dissection board probe, scalpel and scissors sheeps brain microscope, slides and prepared slide of nerve tissue. On this image, the dura matter has been completely removed, you can still see the optic chiasma but the pituitary gland is missing. Sheep brain dissection guide biol 4279 neurobiology studocu. The mammalian eye consists of many specialized cells and tissues that make up several different structures.
Identify the external structures on the inferior surface of your specimen. Name the view of the brain shown in the diagrams below. No content ill write freeform comments when assessing students. You will want to put on the plastic apron do not dispose of it you will need it for aphy102 fetal pig dissection. Sheep brain lab practical thursday, march 15 the dissection component of this lab will count for 60% of this lab grade. However, the adaptations of the sheeps brain differ from those of the human brain. Label the diagram to the right with the dorsalventral axis and the anteriorposterior axis. The purpose of the sheep brain dissection is to familiarize you with the three. You will be making three 3 detailed drawings of the sheep brain in your lab notebook. The sheep brain is quite similar to the human brain except for proportion. Sheep brain dissection the sheep brain is quite similar to the human brain except for proportion. This is a great lab activity for students learning about the brain and the nervous system. You will be responsible for identifying these items for the sheep brain lab quiz. Brain and eyeball dissection lab report gabrielle warner introduction why are the sheep brain and cow eye used to study anatomy.
This brief video shows how to remove the dura mater and then dissect a preserved sheep brain. Sheep brain dissection lab instructions aurum science. Then in the next two pictures you can see that the dera is gone, we had to remove it to see the. Several important parts of the visual system are visible in the ventral view of the brain. An image of the brain is included to help students find the structures. The structures were observed on both halves of the brain so that the rostral and caudal directions could be observed in 3d see midsagittal photos thursday september 9th.
When doing this lab i use sheep brains purchased through a science catalog. The infundibulum pituitary stalk is now visible in the center. Sheep brain lab dissection due jul 20, 2017 by 7am. With each type of brain there will be differences in size, structure, and brain regions, but the general structures and their area of location are relatively the same or very similar. Lena golden and olivia lester lab writeup objective materials dissection tools and trays, lab glasses. Sheep brain dissection lab nervous system by science. Also the sheep brain is oriented anterior to posterior whereas the human brain is superior to inferior.
The next several steps will view this surface of the brain. Dissection of the sheep brain the basic neuroanatomy of the mammalian brain is similar for all species. The purpose of this lab is to introduce you to the gross anatomy of the brain. List and describe the principal structures of the sheep brain 2. Careful dissection also reveals two other large nerves. Matter it will become apparent as you dissect the sheep brain that there are two. To dissect a sheep brain to identify the main parts of the brain. Cranial nerve i or optic nerve carries sensory information regarding vision to the cerebral cortex. Just as the fornix and the caudate nucleus are cshaped structures, the hippocampus is also. You will need the following dissection tools to properly perform this lab.
Sheep brain dissection human anatomy and physiology lab bsb. Once you are confident your labels are correct, have your teacher mark your labeled brain. Also, the sheep brain is oriented anterior to posterior more horizontally, while the human brain is oriented superior to interior more vertically. This is due to that fact that both humans and pigs are mammals. For this lab you will be dissecting the sheep brain which comes with your lab kit. Sheep brain dissection lab instructions this is a set of instructions with illustrated pictures for the dissection of the sheep brain. Describe the location of any meninges observed to be associated with the sheep brain. The dura mater was the thick, opaque layer that had to be pulled back before dissecting. Students will learn about all of the external structures of the brain, including the dura mater, arachnoid mater, and pia mater, as well as the gyri and sulci before actually cutting the brain in half to explore the internal structures. Obtain a preserved sheep brain from the bucket in the front of the classroom.
Instead of using a rodent brain too small or a human brain no volunteer donors, we will study neuroanatomy by examining the brain of the sheep. Sheep brain dissection michigan state university neuroscience program brain bee enrichment workshop october 6, 2012 material and information from this handout was adapted from the following sources. Safety notespecimens should be washed in water before use and the dissection should be performed in a wellventilated laboratory. Discuss some differences between the human brain and the sheep brain. Review with students the terms used to define anatomical directional relationships dorsal, ventral, rostral, caudal, lateral, medial.
Students should not walk around the lab with the dissecting instruments, in particular with a. The cow eye dissection lab what are the structures of the mammalian eye and how do they function. Which division of the nervous system does the brain belong to. Memory 1998 the exploratorium 1998 the exploratorium. Your goal here today is to create a series of pictures of sheep brains in various stages of dissection. Sheep brain dissection human anatomy and physiology lab. The lab is setup as a station lab with each station designed to cover a different section of the brain. Prelab prelab must be submitted to start the lab part 1. Jessica kuhn,jessica magid, karen revere, elizabeth caris, and gray vargasthrough science education at bryn mawr college. These pictures will be labeled, clear, and well defined.
Images taken from the dissection of the sheeps brain, some structures have been labeled. We attempted to follow the cuts as shown on both of the sheep brain dissection guides. Dissecting a sheep brain, students gain appreciation for the complexity of the brain. Sheep brain dissection 1 before starting this lab, open the brain parts and functions document. Use this for a high school lab, or just look at the labeled images to get an idea of what the brain looks like. In general, white matter is found internalexternal to gray matter in the brain. Do not proceed to the next step before checking with the lab instructor. Identify important parts of the sheep brain in a preserved specimen 4 questions by. Use this as a dissection guide complete enough for a high school lab, or just look at the.
There is the frontal or coronal planes which divides front from back. Ask each group to determine which half of the brain they have right or left. There you will find images and text about their dissection of cougar, badger. Dissection tools and trays, lab gloves, lab glasses if desired, and preserved specimen external brain 1 the tough outer covering of the. As an assignment, prepare a labelled drawing and a table organizing the identifiable regions names, recognizable physical features, and known functions. Students spend a few days dissecting sheep brains in class.
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