The human skeleton is the internal framework of the body. It is composed of around 300 bones at birth – this total decreases to 206 bones by adulthood after some bones have fused together. The bone mass in the skeleton reaches maximum density around age 20.

The Human skeleton can be divided up into two parts, the axial Skeleton which is the central core of the body and the Appendicular skeleton which forms the extremities of the arms and legs.

The Axial Skeleton is the central core of the human body housing and protecting its vital organs. The axial skeleton consists of 80 bones:

  • 29 bones in the head - (8 cranial and 14 facial bones) and then also 7 associated bones (6 auditory ossicles and the Hyoid Bone)
  • 25 bones of the thorax - (the sternum and 24 ribs) 
  • 26 bones in the vertebral column (24 vertebrae, the sacrum, and the coccyx)

Bones of the Appendicular skeleton:

  • 4 bones in the shoulder girdle (clavicle and scapula each side)
  • 6 bones in the arm and forearm (humerus, ulna, and radius)
  • 58 bones in the hands (carpals 16, metacarpals 10, phalanges 28 and sesamoid 4)
  • 2 pelvis bones
  • 8 bones in the legs (femur, tibia, patella, and fibula)
  • 56 bones in the feet (tarsals, metatarsals, phalanges, and sesamoid)

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