OBJECTIVES Discuss the five functions of the skeletal system. Describe the structure of a bone.

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Presentation transcript:

OBJECTIVES Discuss the five functions of the skeletal system. Describe the structure of a bone.

The Skeletal System is the body’s living framework. 206 bones make up the skeleton.

Most of the skeletal system is make up of bones, ligaments, tendons, and cartilage.

FUNCTIONS OF THE SKELETAL SYSTEM Provides shape and support Allows movement Protects vital organs and tissues Stores certain materials Produces blood cells

Axial Skeleton skull ribs breastbone vertebral column Appendicular Skeleton shoulders arms and hands pelvis/hips legs and feet

Axial Skeleton

Appendicular Skeleton

Development of Bone

Ball and Socket A ball and socket joint allows for radial movement in almost any direction. They are found in the hips and shoulders.

Hinge A hinge joint allows extension and retraction of an appendage.

Pivot Pivot joints allow rotation around an axis. The neck and forearms have pivot joints. In the neck the occipital bone spins over the top of the axis. In the forearms the radius and ulna twist around each other.forearms

The Skeletal System is the body’s living framework. 206 bones make up the skeleton.