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
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
Moveable Joints • Connective tissues • Ligaments hold together the bones • Cartilage holds together the joints and is more flexible than bone.
Types of Movable Joints • Hinge Joint • Allows forward or backward motion. Examples are the knee and elbow.
Moveable Joints (cont.) • Ball and Socket Joint • Allows the greatest range of motion. Examples are the shoulders and hips.
Moveable Joints (cont.) • Pivot Joint • Allows one bone to rotate around another. An example is your neck.
Moveable Joints (cont.) • Sliding Joint • Allows one bone to slide over another. Examples are the wrist or ankle bones.
Bones • Bones • Complex living structures that undergo growth and development
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
Taking care of your bones • Diet 2) Exercise Well –balanced diet with calcium and phosphorus included Exercise helps bones to grow stronger
Bone diseases • Osteoporosis • A condition where bones become weak and break easily. • Prevent with a good diet and exercise