Skeletal muscle is the type of muscle that controls movement. Problems with these muscles can be minor, life-threatening, or ongoing problems that make it hard to perform basic daily activities.

Your deltoid muscles make up a main muscle group in your upper body. They’re connected with many other muscles and bones in your upper back, neck, and shoulder region and are extremely mobile. They ...

The quadriceps, or quads, are a group of four muscles on the front of the thigh. They are some of the largest and strongest muscles in the body. The quad muscles allow a person to stand, walk, run, ...