*Provide support and protection
*Production of blood cells (hematopoiesis)
*Store fat, iron, and calcium
*Guide the growth of the entire body
Generally, the skeleton is divided into two separate sections:
Axial skeleton- 80 bones creating the body’s midline axis. These bones consist of the skull, ribs, sternum and vertebral column
Appendicular skeleton- 126 bones grouped into the upper and lower limbs and the pectoral girdle. These bones provide an anchor for muscles and allow for movement.
Bone Matrix is the non-living part of the bone, made of water, collagen, protein, and calcium.
Living bone cells-osteocytes found along the edges of the bone matrix. These cells play a vital part in the growth, development, and repair of bones
Inside the bones is the bone marrow. Red marrow is responsible for the generation of blood cells. (hematopoiesis)
At birth, you have 300 bones
As an adult, you’ll have 206 because of fusion
Five groups of bones:
Research the types of bones and provide an example of each.
Common disorders of the skeleton
Locate a picture of a skeleton: