Rat Dissection Pre-Lab Quiz
Name:______________
Date:__________
Period:_____
Standard(s):
•BI9. a. Students know how the complementary activity of major body systems provides cells with
oxygen and nutrients and removes toxic waste products such as carbon dioxide.
Directions: Complete each section below by following the directions.
Part I. Initial Procedure-Fill in the blanks for the initial procedure of the dissection using
the following vocabulary words: lateral, dissecting scissors, dissecting probe, ventral.
1. Collect the dissection tray and equipment
2. Secure your specimen_______ side up, with the legs spread laterally with thread
or pins (thread under the pan works better, usually).
3. Cutting very shallowly using __________, make a medial ventral incision the length
of the body, then_______ incisions at the collar bones, the posterior margin of the
ribcage, and at the hips, cutting deep enough to reach the body cavities but not so deep
as to damage the organs inside.
4. Free the resulting flaps of tissue, gently disconnecting it from underlying tissue
with a________ or careful cutting. You can pin the flaps aside or completely
remove them.
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Part II. Labeling of Internal Anatomy
A.) The Abdominal Cavity-for each organ listed below match the number with the follow organs:
urinary bladder, liver, stomach, small intestine, caecum, and pancreas.
1.)
2.)
3.)
5.)
6.)
7.)
B. Thoracic Cavity- for each organ listed below match the number with the follow organs: diaphragm,
lung, heart, and trachea.
1.)
2.)
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3.)
4.)
Part III. Organization of Internal Anatomy- Starting from the anterior end of the rat and ending at
the posterior end place the organs in order: heart, urinary bladder, testis, lungs, large intestine,
thymus gland, small intestine, liver, stomach, caecum