The muscular system is made up of over 600 muscles that work together to move the body and maintain posture. There are three types of muscle tissue: skeletal muscle, smooth muscle, and cardiac muscle.

Maintaining a healthy body is essential for overall well-being and quality of life. A healthy body is better able to resist disease and infection, and is more likely to function optimally.

The skeletal system is divided into two main parts: the axial skeleton and the appendicular skeleton. The axial skeleton includes the bones of the skull, spine, ribs, and sternum, while the appendicular skeleton includes the bones of the upper and lower limbs.