the muscle contraction as a result of nerve impulses set off a biochemical reaction that causes myosin to stick to actin. human

acid actin adenosine anatomical anatomy arm atp biceps biochemical biology blood body bodybuilding calcium care cell contraction creatine education fatigue fibre filament fitness glucose glycolysis gym hand health healthy human hydrolysis illustration ion lactic medical medicine muscle muscles muscular myosin nerve oxidative oxygen period phosphate reaction relaxation science skeletal structure system tissue triceps triphosphate tropomyosin troponin