The arm extends from the shoulder to the wrist, including the upper arm and forearm. Different muscles may work together in intricate ways to help the arm, wrists, fingers, and hands function. Knowing ...

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.

August 11, 2009 — Weak strength (grip and knee extension), poor function (walking speed, chair stands), and low muscle density, but not muscle size or lean mass, are associated with greater risk for ...

Cardiac muscle tissue, or myocardium, is a type of muscle tissue that forms the heart. It contracts and releases involuntarily and keeps the heart pumping blood around the body. The human body ...

If you tend to breeze through the "easy" part of an exercise—like lowering into a squat or letting your dumbbells drop after a curl—you might be missing a major opportunity to build strength. That ...