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The adult human skeleton usually consists
of 206 named bones. These bones can be grouped in
two divisions: axial skeleton and appendicular skeleton.
The 80 bones of the axial skeleton form the vertical
axis of the body. They include the bones of the head,
vertebral column, ribs and breastbone or sternum.
The appendicular skeleton consists of 126 bones and
includes the free appendages and their attachments
to the axial skeleton. The
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free appendages are the upper and lower extremities, or limbs,
and their attachments which are called girdles. The named
bones of the body are listed below by category.
