As an assignment, prepare a labelled drawing and a table organizing the identifiable regions names, recognizable physical features, and known functions. When doing this lab i use sheep brains purchased through a science catalog. L2 studentpacket sheepbrainexploration project neuron. Before beginning inspection and dissection of the brain you should have these materials on hand.
Use this as a dissection guide complete enough for a high school lab, or just look at the. Dissecting a sheep brain, students gain appreciation for the complexity of the brain. Dissection tools and trays, lab glasses, lab gloves, preserved specimen. A fruit that come find the answers to these questions.
You will be responsible for identifying these items for the sheep brain lab quiz. Sheep brain dissection human anatomy and physiology lab bsb. It can divide the brain and any location as long as it. However, the adaptations of the sheeps brain differ from those of the human brain. Just as the fornix and the caudate nucleus are cshaped structures, the hippocampus is also. This is a great lab activity for students learning about the brain and the nervous system. Dissection tools and tray, lab gloves, preserved 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. In addition to the direction, the brain as a three dimensional object can be divided into three planes.
The mammalian eye consists of many specialized cells and tissues that make up several different structures. 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. Anatomy corner resource site for teachers and students of anatomy and physiology. This is the url to a sheep dissection lab created by five students inthe bicollege haverford and bryn mawr community. Dissection of the sheep brain the basic neuroanatomy of the mammalian brain is similar for all species. Sheep brain lab practical thursday, march 15 the dissection component of this lab will count for 60% of this lab grade. Sheep brain dissection lab answer key samstercyrant. Garbage bag for brain waste gloves newspaper dissection board probe, scalpel and scissors sheeps brain microscope, slides and prepared slide of nerve tissue. Identify the external structures on the inferior surface of your specimen. I am a hands on learner and when i can touch or see things i am able to make connections. 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 dissection the sheep brain is quite similar to the human brain except for proportion.
Ask each group to determine which half of the brain they have right or left. Students should not walk around the lab with the dissecting instruments, in particular with a. Sheep brain dissection human anatomy and physiology lab. Safety notespecimens should be washed in water before use and the dissection should be performed in a wellventilated laboratory. For this lab you will be dissecting the sheep brain which comes with your lab kit. We attempted to follow the cuts as shown on both of the sheep brain dissection guides. 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. On this image, the dura matter has been completely removed, you can still see the optic chiasma but the pituitary gland is missing. There is the frontal or coronal planes which divides front from back. Matter it will become apparent as you dissect the sheep brain that there are two. Which division of the nervous system does the brain belong to. Your goal here today is to create a series of pictures of sheep brains in various stages of dissection.
Sheep or pig brains suitable for dissection can be supplied as fresh, frozen or preserved. Sheep brain dissection lab nervous system by science. To begin get gloves and a rubber apron or lab coat. Being able to locate structures in the sheep brain will help you to understand the anatomy of the human brain as well. Careful dissection also reveals two other large nerves. Find quizzes, diagrams, and slide presentations on structures, functions, and systems. Sheep brain dissection by gwinnett technical college on vimeo, the home for high quality videos and the people who love them. The cow eye dissection lab what are the structures of the mammalian eye and how do they function. In general, white matter is found internalexternal to gray matter in the brain. The pia mater is the thin, vascular layer that adheres to the surface of the brain. Several important parts of the visual system are visible in the ventral view of the brain.
Sheep brain dissection guide biol 4279 neurobiology studocu. Name some similarities between the human brain and the sheep brain. Name the view of the brain shown in the diagrams below. Brain dissection for this lab you will be dissecting the. The infundibulum pituitary stalk is now visible in the center. We did a class dissection on them, and everyone had to do a different cut to each brain. 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. Mammalian brains have many features in common so sheep brains are dissected to help understand the brains of other mammals as well. Sheep brain dissection lab by melanie lewi on prezi. Both the dorsal and ventral aspects of the hippocampus are readily apparent at this level. The next several steps will view this surface of the brain. The sheep brain is quite similar to the human brain except for proportion.
The lab practical component of this lab will count for the remaining 40% of the lab grade. Learn the external and internal anatomy of sheep brains with hsts learning. List and describe the principal structures of the sheep brain 2. In the first two pictures you can see the dera, which kept all the parts of the brain together in one piece. Lena golden and olivia lester lab writeup objective materials dissection tools and trays, lab glasses. The structures have certain functions and together. Ap biology sheep brain dissection lab 50 points directions. 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. To minimize the drying of your hands, rinse the brain under a slow stream of running water before proceeding with the dissection. Sheep brain dissection lab instructions this is a set of instructions with illustrated pictures for the dissection of the sheep brain. Images taken from the dissection of the sheeps brain, some structures have been labeled. Once you are confident your labels are correct, have your teacher mark your labeled brain.
Submitting a text entry box, a website url, a media recording, or a file upload. There you will find images and text about their dissection of cougar, badger. Obtain a preserved sheep brain from the bucket in the front of the classroom. These steps will need to be repeated prior to each laboratory session.
Lecture notes brain structure and its origins brain and cognitive. This brief video shows how to remove the dura mater and then dissect a preserved sheep brain. These pictures will be labeled, clear, and well defined. Sheep brain dissection follow along with the steps in the exploratorium activity click on photo with your own specimen.
Make your final coronal cut immediately anterior to the splenium of the corpus callosum. This dissection guide was revised october 2014 with improved instructions and color images for a better dissection and easier identification of internal and. Students spend a few days dissecting sheep brains in class. Students make observations, learning about the structure and function of brain regions, white and gray matter. Do not proceed to the next step before checking with the lab instructor. You will be making three 3 detailed drawings of the sheep brain in your lab notebook. Also, the sheep brain is oriented anterior to posterior more horizontally, while the human brain is oriented superior to interior more vertically. Label the diagram to the right with the dorsalventral axis and the anteriorposterior axis. Memory 1998 the exploratorium 1998 the exploratorium.
Sheep brain dissection guide page 3 planes of orientation. Set the brain down so the flatter side, with the white spinal cord at one end, rests on the dissection pan. Dissection tools and trays, lab gloves, lab glasses if desired, and preserved specimen external brain 1 the tough outer covering of the. 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. Prelab prelab must be submitted to start the lab part 1. Refer to images, descriptions, and functions of parts of the brain as you proceed through this lab.
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. Sheep brain dissection lab instructions aurum science. Brain and eyeball dissection lab report gabrielle warner introduction why are the sheep brain and cow eye used to study anatomy. 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. Describe the location of any meninges observed to be associated with the sheep brain. 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. Review with students the terms used to define anatomical directional relationships dorsal, ventral, rostral, caudal, lateral, medial.
In the days between the dissection and the practical, you may come in to observe brains and further study the structures and locations. 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. Objectives list and describe the principle structures of the sheep brain identify important parts of the sheep brain in a preserved synonym materials areas of the brain part one longitudinal cerebral fissure sheep brain dissection lab by melanie lewi, julia baird, and olivia. 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. Cranial nerve i or optic nerve carries sensory information regarding vision to the cerebral cortex. 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. 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. Direct students to put a glove on their writing hand and remove the dura mater. Sheep brains, although much smaller than human brains, have similar features and can be a valuable addition to anatomy studies. This is due to that fact that both humans and pigs are mammals. The sheep brain is enclosed in a tough outer covering called the. The lab is setup as a station lab with each station designed to cover a different section of the brain.
Thus, it can sometimes be seen in two places, depending on the plane of dissection. You will need the following dissection tools to properly perform this lab. Students learn about the structures of the brain through dissection and observation of this fascinating organ. Youll need a preserved sheep brain for the dissection.
Anatomy sheepbrain dissection lab dayton school district. Sheep brain dissection 1 before starting this lab, open the brain parts and functions document. By using the sheep brain and cow eye, learning becomes easier. Cranial nerve i or olfactory bulb carries sensory information regarding smell to the cerebral cortex. Also the sheep brain is oriented anterior to posterior whereas the human brain is superior to inferior. Jessica kuhn,jessica magid, karen revere, elizabeth caris, and gray vargasthrough science education at bryn mawr college. The purpose of the sheep brain dissection is to familiarize you with the three. To dissect a sheep brain to identify the main parts of the brain. No content ill write freeform comments when assessing students.
An image of the brain is included to help students find the structures. The optic chiasma is where the axons from each right and left. Learn brain structure and function by dissection a sheep brain. Discuss some differences between the human brain and the sheep brain. The dura mater was the thick, opaque layer that had to be pulled back before dissecting. Use this for a high school lab, or just look at the labeled images to get an idea of what the brain looks like. The purpose of this lab is to introduce you to the gross anatomy of the brain.
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