The skeletal system is a network of bones that supports and protects the body's organs and tissues. It also provides a framework for muscle attachment, allowing for movement. The skeletal system is made up of 206 bones, which account for about 15% of the body's weight.

The bones of the skeletal system are classified into five main types:

* Long bones are the long, cylindrical bones that form the limbs.

* Short bones are the small, cube-shaped bones that form the wrists and ankles.

* Flat bones are the thin, flat bones that form the skull, ribs, and pelvis.

* Irregular bones are the bones that have an irregular shape, such as the vertebrae and hip bones.

* Sesamoid bones are the small, round bones that are embedded in tendons near joints.

The skeletal system is divided into two main divisions:

* The axial skeleton consists of the bones of the head, neck, and trunk.

* The appendicular skeleton consists of the bones of the limbs.

The skeletal system is an essential part of the body. It provides support, protection, and movement. It also stores minerals, such as calcium and phosphorus, and produces blood cells.