The primary purpose of the skeleton is to provide structural support to the body, enabling it to maintain its shape. The skeleton serves as a framework that supports muscles and protects vital organs, such as the heart and lungs. Additionally, it facilitates movement by serving as attachment points for muscles, enabling locomotion. The skeleton also plays roles in mineral storage, particularly calcium and phosphorus, and houses the bone marrow, which produces blood cells. Altogether, the skeleton is vital for both physical stability and overall bodily functions, making it essential for survival.