Which body system maintains posture, allows locomotion, and produces heat?

The muscular system is responsible for maintaining posture, enabling movement, and generating heat through muscle contractions. Muscles work continuously to stabilize the body in an upright position, which is essential for maintaining posture. When we engage in physical activities such as walking or running, the muscular system facilitates locomotion by contracting and relaxing muscles that control the skeleton. Additionally, muscles produce heat as a byproduct of energy expenditure during contraction, contributing to the body’s overall temperature regulation. This thermogenic function of the muscular system is particularly important during exercise when the demand for heat production increases.