Final answer:
The muscular system is crucial for enabling bodily movements, which includes voluntary motion facilitated by skeletal muscles, as well as involuntary functions carried out by cardiac and smooth muscles.
Step-by-step explanation:
Major Function of the Muscular System
One major function of the muscular system is to provide movement to the body. This system is comprised of skeletal muscles, which are responsible for voluntary movements such as walking, running, and even practices like yoga. The muscular system works in concert with the skeletal system, where muscles contract and pull on the bones, creating the motion we see. The human body contains almost 650 skeletal muscles, which facilitate this complex sequence of movements. Besides skeletal muscles, the muscular system also includes cardiac muscle, which propels blood by causing the heart to beat, and smooth muscle, located in various internal organs and structures, controlling their involuntary movements.