The primary role of muscle tissue in the body is to facilitate movement. Muscle tissue comprises three types: skeletal, cardiac, and smooth, each serving distinct functions. Skeletal muscle enables voluntary movements, while cardiac muscle is responsible for involuntary contractions of the heart. Smooth muscle controls involuntary movements in organs and vessels. Beyond movement, muscle tissue also plays roles in posture maintenance and heat production through metabolic activity. Overall, muscle tissue is essential for daily functioning and overall physical performance.