1. There are more than 200 joints in the human body.

2. The shape of the joint determines exactly how that part of the body will move.

3.Cartilage is the slippery , elastic tissue that covers the ends of the bones where they meet and touch.

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

5. A hinge joint works like the hinge of a door, it allows movement in only one direction.

6. You would find a hinge joint in your legs, fingers, and in your arms.

7. Your ball and socket joint allows your arm to move in any direction.

8. You would find a ball-and-socket joint in your hips.

9. The gliding joint allows small movements.

10. You could find a gliding joint in your wrist and ankle.