Bones can be classified by their shape. This helps doctors
to identify bones, but also helps forensic scientists and
archeologists to identify different bones when an entire skeleton is
missing. There are four major types of bones including: long,
short, flat, and irregular bones. The skeleton is divided into two
groups: appendicular and axial.
The appendicular includes all the extremities
like the leg and arms. It can be divided into the upper and lower
extremities. The lower extremities include the leg bones which are
attached to the axial skeletal by the pelvis.
The axial skeleton forms the central axis of the
body and is composed of the skull, spinal column, sternum, and ribs.
Most of our important organs are protected by the axial skeleton.