mouse dissection 09 by sew21405


									Biology 5610
                                                                 Spring 2009

Mouse Dissection

This laboratory exercise provides you with an opportunity to dissect a recently eutha-
nized and unpreserved mouse (representative mammal). The chemicals used for pre-
serving animal tissues (e.g., formaldehyde) are odiferous cross-linking agents that
chemically alter the physical properties of the animal tissues. Thus, the advantage of
using a fresh-- as opposed to preserved--mouse is that you will be able to sense the
normal colors, odors and textures of the tissues and organs. However, you should bear
in mind that the tissues will be oxygen-deprived and hence may have a darker color
than in the living mouse. Nonetheless, this dissection exercise should give you a better
idea about the real properties of living animal tissues.

Precautions: You should make every attempt to avoid contact with mouse body fluids.
Wear gloves, and eye protection for this dissection. No eating or drinking in lab. DO
NOT touch your face or anything that will come into contact with your nose or
mouth while you are wearing the gloves that you used to handle the mouse.
Wash your hands thoroughly with anti-bacterial soap before exiting the lab.

1) You will use an online guide to mouse dissection, provided for you.

2) Your lab report will NOT use the standard format. Instead, you will make a detailed
description of the appearance of each tissue and organ as follows:

      A) Identity of organ

      B) Location

      C) Shape

      D) Size (relative to other organs)

      E) Color

      F) Texture

      G) Consistency (i.e. firm or soft)

      H) Major Function(s) (CITE this information)
Biology 5610
                                                                 Spring 2009
Organs to be identified:

      1) Axillary lymph nodes

      2) Inguinal lymph nodes

      3) Salivary gland

      4) Rib Cage

      5) Diaphragm

      6) Intestines

        a) small intestine

        b) large intestine

      7) Stomach

      8) Liver

      9) Urinary Bladder

      10) Pancreas

      11) Spleen

      12) Kidneys

      13) Adrenals

      14) Heart

      15) Thymus

      16) Lungs

3) State the phylogenetic classification of the mouse, including Kingdom, Phylum,
Class, Order, Family, Genus and Species.

Include literature cited where appropriate (which means that every question, including
the tissue/organ spreadsheet, needs to be cited).

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