The Skeletal System

1. The Skeletal System

2. Functions of the Skeletal System • Five Major Functions • Provides shape and support • Enables movement • Protects organs • Produces blood cells • Stores minerals and other materials for your body

3. Joints of the Skeleton • Joints • Types of Joints • Allow bones to move in different ways 1) Moveable- allow body to make wide range of movements 2) Immovable- allows little or no movement

4. Moveable Joints • Connective tissues • Ligaments hold together the bones • Cartilage holds together the joints and is more flexible than bone.

5. Types of Movable Joints • Hinge Joint • Allows forward or backward motion. Examples are the knee and elbow.

6. Moveable Joints (cont.) • Ball and Socket Joint • Allows the greatest range of motion. Examples are the shoulders and hips.

7. Moveable Joints (cont.) • Pivot Joint • Allows one bone to rotate around another. An example is your neck.

8. Moveable Joints (cont.) • Sliding Joint • Allows one bone to slide over another. Examples are the wrist or ankle bones.

9. Bones • Bones • Complex living structures that undergo growth and development

10. Bone Structure • Compact bone -Spongy bone -Marrow • Located beneath the bone’s outer membrane and is hard and dense • Has many small spaces with in it • Located in the bones and is a soft connective tissue

11. Taking care of your bones • Diet 2) Exercise Well –balanced diet with calcium and phosphorus included Exercise helps bones to grow stronger

12. Bone diseases • Osteoporosis • A condition where bones become weak and break easily. • Prevent with a good diet and exercise