You either use it or lose it, esp when your arm is in a cast. If you break or sprain your arm and need a cast, chances are your muscles will get a bit weaker. Fret not though -- through activity, you can get your arm back in shape. So, let your arm heal in the cast then work on getting it back in use.

The trapezius, the large muscle of the back, is responsible for moving the shoulders and neck and supporting the arms. Overuse -- through weightlifting or carrying heavy objects -- may lead to muscle strain or a partial tear of the trapezius muscle, which may be mild -- first-degree -- or moderate -- second-degree.

A type of carbohydrate, you'll find lactose in milk and milk products. It is a disaccharide, or a sugar molecule, consisting of two sugars – glucose and galactose.

Muscle cells serve a remarkable variety of functions in your body, many of them occurring involuntarily. The specialized structure of the 3 types of muscle cells in the human body enables their functional purposes.

While there are various types of muscles in the human body, when someone mentions muscle tightness, they’re usually talking about stiffness in the skeletal muscles.

Gluteus maximus, the largest muscle in the body, helps power you up hills and stairs and supports your hip and pelvis while squatting and lunging. Treatment for a gluteus maximus injury depends on the type and severity of the injury.

The human body contains 3 types of muscle tissue: smooth, cardiac and skeletal. Skeletal muscles are responsible for locomotion and other body movements under voluntary control. The body includes more than 600 skeletal muscles of various shapes and sizes.

Although you doubtless appreciate the role your muscular system plays in your daily activities, you may be unaware of the different types of muscle tissue in your body and the special role each plays in keeping you functioning to your best advantage.

Humans have survived on this planet for thousands of years because of our ability to adapt. Physiological adaptations start to occur almost immediately when beginning a new exercise program.

Potassium is an important mineral to the body and plays roles at both the cellular and electrical level. In fact, it is also considered an electrolyte because it carries a tiny electrical charge. Potassium is found in red blood cells, muscles and bones.

The body's pH level influences its health. The acid-base balance of your blood is significant for normal daily function, healing and digestion. The acidity or alkalinity level of your body is determined by a pH, potential of hydrogen, scale.

The body creates scar tissue as a kind of glue to hold damaged tissues together after an injury or surgery. While immensely helpful in the recovery process, scar tissue can build excessively following an ankle injury or surgery, restricting mobility in your ankle.