1. The Skeletal System
Your skeleton is made up of all of the bones in your body.
A newborn baby has about 275 bones.
An adult has about 206 bones.
As a baby grows, some of its bones fuse together.

2. Five major functions of the skeleton
Provides shape and support
Vertebrae- 26 bones of the spine
Enables movement
Protects organs
Produces blood cells
Stores minerals and other materials

3. Joints of the Skeleton
- The Skeletal System
A joint is a place in the body where two bones come together. Joints allow bones to move in different ways.

4. Ligaments- connect bones together
Cartilage- covers the ends of bones and keeps them from rubbing together.
Compact Bone- hard and dense
Spongy Bone- beneath compact bone, contains many small spaces

5. Marrow- soft connective tissue
1. Red Marrow- produces most of the body’s red blood cells. You have more red marrow as a child than as an adult.
2. Yellow Marrow- stores fat that can serve as energy reserves.

6. Bones—Strong and Living
- The Skeletal System
Bones are complex living structures that undergo growth and development.

7. Bone Care Eat a balanced diet and exercise
Osteoporosis- mineral loss in the bones; they get weak and easily break
To prevent osteoporosis, eat lots of calcium-rich foods!