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Functions and Organization of the Skeletal System

The major function of the skeletal system is to provide support for the body. In addition, it plays roles in:
  • The storage of calcium.
  • The production of blood cells.
  • The facilitation of movement.
  • The protection of important organs.
Individual bones, composed mainly of connective tissue, are the organs of the skeletal system. The skeletal system is divided into the axial and appendicular portions. The axial skeleton consists of the skull, hyoid bone, thoracic cage, and vertebral column. The appendicular skeleton consists of the pectoral girdle and the upper limbs (arms), and the pelvic girdle and the lower limbs (legs). There are usually a total of 206 bones in the human body, and most of these can be found in the skull, hands, and feet.

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