ATP powers all the activity of muscles. Muscles move because of the continual and instantaneous breakdown of ATP. The release of energy from ATP is a small thing, but essential to life itself. Muscle is an excitable tissue that it can be stimulated to produce an action potential. An action potential is an electrical change across the membrane. Muscle contraction requires a great deal of energy. The aerobic energy of a resting muscle comes two- …showed first 75 words of 324 total…

…showed last 75 words of 324 total…