UNIT 5: Structure and Function of Organisms, Part 2
Lesson 1: Physical and Chemical Changes in Digestion
Human Body Book
Following your teacher's instructions, create a book about the functions of the
human body.
Title each diagram.
Describe in your book the functions of the system.
On the diagrams provided by your teacher, label and color the following:
small intestine—brown
large intestine—yellow
urinary bladder—yellow
Using the materials provided by your teacher, design a filter to model how kidne
filter waste from the blood. The “blood” to be cleaned is muddy water.
In your science notebook, draw and label the filter and describe the efficiency of the
Keep a small amount of muddy water to use as a control for comparisons.
Participate in a gallery walk to observe filters created by other groups. S
e 100 Sheets 200 Pages Wide Ruled
9 3/4 x 7 1/2 in. 24.7 x 19.0 cm
1. Compare the water before and after filtering through each one of the filters.
Which one cleaned the water most efficiently?
2. Which of the filters is most like the kidneys? Why?
The function of the kidneys is much more complex than your model. There is a
delicate chemical balance that must be maintained in the body. The kidneys are
“chemists” in that they measure amounts of chemicals your body needs, such
as sodium, phosphorus, and potassium, and they make sure there is the correct
amount in the blood for your body to function.
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