Intro and Rat Lab Manual F09 - Introduction to dissections...

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LAB Introduction to dissections Page # 159 Introduction to dissections and animal use Animal use in Biology 1A Certain courses offered at the University of California at Berkeley require the use of animals, living or preserved, vertebrate and/or invertebrate, and/or their preserved and/or extracted parts, in the course of instruction. Such animal use is determined judiciously by the instructors of the courses to be necessary and appropriate to the education of students, both intellectually and technically. All animal use is thoroughly reviewed by the campus Animal Care and Use Committee. It is the responsibility of students to ascertain course requirements before enrollment, and it is the responsibility of instructors to provide that information clearly and unequivocally. Should students find enrollment in a course not appropriate to their interests or beliefs, they should see their advisors to recommend alternative courses, or if appropriate, alternative majors. The instructors believe strongly that the dissections are important. Currently, videos and computer simulations do not adequately train individuals nor do they introduce the variability inherently present in organisms. Most dissected animals are used to feed other animals. Lab manual This half of the manual is designed to guide you in your dissections. The objectives of this portion of the lab are threefold: 1) comparative anatomy, 2) comparative physiology and 3) diversity. As you do the following labs you should think about the habitats of these organisms and the adaptations that these organisms have evolved. You are responsible for lab material presented by your GSI! Minimally this means you should be able to identify and/or give the function of all underlined words. You should also be able to name structures, which perform similar functions (i.e., homologous structures) in the various organisms you will examine. As you proceed through the semester, make sure that you fill out the charts. You will have a lab practical that will cover this material. Dissecting equipment will be provided. Multicellularity Single-celled organisms face many challenges with respect to gas exchange, nutrient acquisition, elimination of wastes, defense, and of course reproduction. Multi-celled organisms face additional challenges; many of which are a direct result of changes in cell number, cell volume and increased distances between cells. Since diffusion occurs slowly over long distances certain organ systems have evolved to allow faster exchange. Are there physical aspects of an organism that might imply the need for a circulatory system, a digestive system, a nervous system, endocrine control, or an immune system? Think, think, think—don’t be passive while working on the dissections. The material is truly amazing if you think about it. A positive attitude will make learning easier and more enjoyable. Comparative anatomy and diversity.
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Intro and Rat Lab Manual F09 - Introduction to dissections...

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