Skeletal System By:Willetta Hill

The Skeletal system consist of the 206 bones with their associated tissues, eg., cartilage, ligaments tendons, as well as the joints (articulations), the muscles pull on the bones to make them move.

The Functions are A. support for the body – the tubular structure of bones (dense, hard bone with hollow center) affords the maximum support with the least materials B. Protection for vital organs – The skull protects the brain, rib cage and sternum protects the heart and lung, the pelvis protects reproductive organs. C. anchorage for the muscles – a-point of origin –fixed point of a muscle to a bone b-point of insertion – the moving point of attachment of a muscle to a bone. The contraction of the muscle brings the insertion closer to the origin. D. The joints or articulations where bones meet other bones permit varging E. Bones house marrow tissue – marrow tissue is responsible for the formation of blood cells ( Hematopoiesis)

The Skeletal System Interacts with the MUSCULAR SYSTEM