What are the two main divisions of the skeletal system?

The two main divisions of the skeletal system are the axial skeleton and the appendicular skeleton. The axial skeleton comprises the bones that form the long axis of the body, including the skull, vertebral column, and rib cage. This division primarily serves to protect the vital organs, such as the brain, heart, and lungs, while providing a framework for the body.

The appendicular skeleton includes the bones of the limbs and the girdles (shoulder bones and pelvic bones) that attach the limbs to the axial skeleton. This division is essential for movement, as it enables the limbs to interact with the environment.

Understanding these divisions is crucial in the study of human anatomy, as each part has distinct functions and consists of different types of bones. This distinction aids in comprehending how the skeletal system supports and protects various bodily functions.