Biology notes on "The Muscular System."

The Muscular System Muscles are what allow and make your skeleton able to move around. The muscles are attached to the bones by strips of dense connective tissue called tendons. The origin is one end of the muscle which remains stationary during a muscle contraction. This gives the muscle something to pull against. The insertion is the other side of the muscle, it is attached to a bone that moves when the muscle contracts. A …

…the strength) of their muscles. A muscle strain, commonly called a pulled muscle, is the overstretching or tearing of a muscle. Muscle strain occurs when a muscle is overused or when strenuous exercise is done without warming up exercises. A sprain is a torn or overly stretched muscle, ligament, or tendon. If excessive stress causes the tendons that the muscles attach to bone to become inflamed, then tendonitis results, which is an extremely painful condition.