Q: What percentage of the weight of the human body does the Muscular System make up?  

The Muscular System accounts for approximately 50% of the weight of the human body. This system is primarily responsible for generating the forces that allow for body movement. The Muscular System consists of three different types of muscles, which are skeletal, smooth, and cardiac muscles. These muscles have different structures and functions. Skeletal muscles are responsible for voluntary movement, while smooth muscles control involuntary actions, such as the movement of internal organs. Cardiac muscles are found in the heart and are responsible for pumping blood throughout the body. Overall, the Muscular System is essential for the proper functioning of the body and is a crucial factor in maintaining good health.