What is the function of the skeletal system in humans?

The skeletal system in humans provides structure and support for the body, allowing for upright posture and movement. It is composed of bones, cartilage, ligaments, and tendons that work together to form a strong, yet flexible framework. In addition to structural support, the skeleton protects vital organs such as the brain, heart, and lungs. The skeletal system also plays a critical role in the production of blood cells in the bone marrow, stores minerals like calcium and phosphorus, and facilitates movement through joints and muscles.