1. The Motor System BEHAVIOUR

3. FUNCTIONS The skeletal system has five very important jobs: 1.- Support, 2.- protection (the bones also protect many organs, and also the brain. Our skull protects the brain and our ribs protect our internal organs), 3.- movement, 4.- storage, 5.- and production of blood cells. Just think, if we did not have a skeletal system we would be just like a blob of Jell-O .

4. COMPONENTS OF THE SKELETON SYSTEM 1.- Bones and cartilage 2.- Joints 3.- Muscle system

6. 7/11/10 PARTS OF A BONE Each bone is made up of different parts

8. JOINTS knee or elbow. like a hip or shoulder Some turn from side to side, like a neck or wrist. The place where two bones join is called a join. There are two types of joints: 1.- Fixed joints do not let the bones move. Pe: the skull 2.- Movable joints let the bones move: HINGE JOINTS One direction BALL AND SOCKET JOINTS All directions and allow the greatest freedom of movement. knee or elbow. like a hip or shoulder Some turn from side to side, like a neck or wrist. Joints let us move the parts of the body. If all the bones were attached to each other, the skeleton would be rigid.

10. AN EXEMPLE OF A JOINT

15. CARDIAC MUSCLE

18. 7/11/10 ACTIVITY 3:

19. To learn more about Human Body