Skeletal System

Skeletal System The framework of your body and it is made of 206 living bones (300 in babies)

5 Functions of the skeletal system 1. Gives shape and support to your body

2. Protects your internal organs =

3. Muscles attached to your bones help you move

4. Marrow in the center of bones makes blood cells (2 4. Marrow in the center of bones makes blood cells (2.5 million/second)

Bones store calcium and phosphorus for our body - Ca helps our heart and muscles work P helps our cells produce and store energy When stored in our bones, Ca and P help make bones stronger

Joints Any place where 2 or more bones come together. Ligaments hold the bones together

5 types of joints Immovable joint (little or no movement)-skull

Ball and Socket (circular motion)-hip and shoulder

3. Pivot (twisting motion)-forearm

4. Hinge (one direction)- elbow and knee

5. Gliding (bones slide past each other)- wrist