1. there are more than 200 joints in a human body
2. is a shape of a joint

3. The cartilage, keep slippery by a special fluid,allows the bones to move against one another with less friction.

4.a slippery,elastic tissue covers the end of the bones where they meet and touch.

5. the function of hinge is like a doorknob or a hinge of a door.

6. you will find ahinge in your legs,arms, and fingers.

7. a ball and socket lets you swing your arms and legs.

8. a shoulder joint and a hip joints.

9. gliding joint

10. wrist and ankle.