Stuyvesant High School
Department of Biology & Geo-Science
LABORATORY REPORT
EXERCISE #13
HOW ARE THE INTERNAL ORGANS OF A FROG ORGANIZED?
Name______________________________Section__________Teacher_____________Date_______
I. SUMMARY QUESTIONS
1. Compare the circulation of blood in the heart and lungs for the frog and for man. Does a frog need a
pulmonary circulation system as “efficient” as man’s? Explain.
2. Describe the function of each of the following: spleen, gall bladder, and the pancreas. (You should
use a textbook to find the answers.)
a. Spleen –
b. Gall bladder c.
Pancreas –
3
Did you find it hard to “straighten” out the digestive tract? Explain what you saw holding the digestive
tract in its shape.
4
Compare the relative sizes of the brain lobes of your frog to any small mammal and to a human. Do
you see a pattern? Explain. You should consult a TEXTBOOK for the answer.
II. DRAWING
Draw and label a diagram of the internal frog and dorsal view of the frog brain.
1. Diagram of internal frog.
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Laboratory Manual
Stuyvesant High School
Department of Biology & Geo-Science
2. Diagram of dorsal view of brain.
3. Indicate the function of at least five organs you labeled above.
a.
b.
c.
d.
e.
This student has satisfactorily dissected and identified the internal features of the frog.
_____________________________
Classroom/Lab Teacher
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Laboratory Manual