List five functions of skeletal system.

The skeletal system has several crucial functions in the human body. Here are five key functions:

1. Support: The skeletal system provides a structural framework for the body, supporting tissues and organs.

2. Protection: It protects vital organs. For example, the skull encases the brain, and the rib cage shields the heart and lungs.

3. Movement: Bones act as levers and joints serve as pivot points for muscles to attach and facilitate movement.

4. Mineral Storage: Bones store minerals, such as calcium and phosphorus, which can be released into the bloodstream as needed.

5. Blood Cell Production: The bone marrow, found in certain bones, is responsible for producing red blood cells, white blood cells, and platelets.