What is definition of the Muscular system?

The muscular system is a complex network of tissues that enables movement in the body through the contraction and relaxation of muscles. It consists of three main types of muscle tissue: skeletal, smooth, and cardiac. Skeletal muscles are responsible for voluntary movements, while smooth muscles control involuntary actions in organs, and cardiac muscle forms the heart. Together, these muscles work in coordination with the skeletal system to facilitate movement and maintain posture.