1. What two kinds of joints have you?

2. Describe each kind.

3. Find as many of each kind as you can.

4. How are the joints kept moist?

5. How many bones are there in your whole body?

6. Count the bones in your hand.

7. Of how many bones is your spine made?

8. Why could you not use it so well if it were all in one piece?

9. What is the use of the little cushions between the bones of the spine?

10. How many ribs have you?