What is the primary function of skeletal muscles?

The primary function of skeletal muscles is to enable voluntary movement of the skeleton. Skeletal muscles are attached to bones by tendons and work in pairs to facilitate movement through contraction and relaxation. When these muscles contract, they pull on the bones, leading to motion at the joints, which allows for activities such as walking, lifting, and running. This voluntary control is a defining characteristic of skeletal muscle, distinguishing it from other types such as cardiac and smooth muscle, which are involuntary.

In addition to movement, skeletal muscles also play a role in maintaining posture and generating heat during physical activity. Their ability to contract consciously allows individuals to perform a wide range of movements necessary for daily life and exercise. This unique function emphasizes the importance of skeletal muscles in the overall biomechanics of the human body.