THE MUSCULAR SYSTEM. THE MUSCLAR SYSTEM. FUNCTIONS: Body Movement Pump Blood Throughout body Move food through digestive system Control air movement in and out of the lungs. MUSCULAR SYSTEM. CONTRACTION. CONTRACTION : Shortening of a muscle. EXTENSION : stretching of a muscle .
damage to the muscle fibers themselves. Muscle biopsies taken on the day after hard exercise show bleeding and disruption of the z-band filaments that hold muscle fibers together as they slide over each other during a contraction.
After Femur fracture
What is Glycogen?
- An organic compound in muscles. Stored in cells and used as the body needs energy.