Biography and career. Satterfield was born Louis Edward in Shaw, Mississippi, a city in Bolivar and Sunflower counties, Mississippi, in the Mississippi Delta region, on April 3, 1937.
Excitation-contraction coupling (ECC) is the process whereby an action potential triggers a myocyte to contract.When a myocyte is depolarized by an action potential, calcium ions enter the cell during phase 2 of the action potential through L-type calcium channels located on the sarcolemma.hen calcium binds to the TN-C, this induces a conformational change in the regulatory complex such that troponin-I (TN-I) exposes a site on the actin molecule that is able to bind to the myosin ATPase located on the myosin head.
isotonic contraction muscle contraction without appreciable change in the force of contraction; the distance between the origin and insertion becomes lessened. lengthening contraction eccentric contraction.postural contraction the state of muscular tension and contraction that just suffices to maintain the posture of the body. segmental c's muscular contractions of the small intestine that serve to mix and transport chyme. shortening contraction concentric contraction.sotonic contraction muscle contraction without appreciable change in the force of contraction; the distance between the origin and insertion becomes lessened. lengthening contraction eccentric contraction.