1. 13.2 The Skeletal system

2. Functions of the Skeletal system
5 major functions:
Provides shape and support
Enables you to move
Protects your organs
Produces blood cells
Stores minerals and other materials until your body needs them.

3. Shape and support Skeleton determines the shape of your body
Vertebral column (backbone) is the center of the skeleton

4. Movement and protection
Your skeleton allows you to move.
Muscles pull on the bones to make the body move.
Bones protect the organs : brain, heart, lungs
Production and storage of substances
Makes blood cells
Stores minerals such as calcium and phosphorus

5. Joints of the skeleton Joints allow bones to move in different ways.
Some joints do not move – immovable joints (skull)
Movable joints
Hinge joints
Ball and socket joint
Pivot joint
Sliding joint

7. The bones in movable joints are held together by strong connective tissues called ligaments.
Cartilage, another connective tissue, covers the ends of the bones and keeps them from rubbing against each other.

8. Bones- Strong and Living
Bones grow and develop

9. Taking care of your bones
Diet: Calcium and phosphorus – keeps the bones strong
Dairy products, green vegetables
Exercise: moving around makes your bones stronger and denser

10. Osteoporosis: a condition in which the body’s bones become weak and break easily.