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.
Excitation-Contraction coupling & contraction in smooth muscle. Excitation-Contraction Coupling: Some of the most important differences between skeletal muscle and smooth muscle occur in excitation-contraction coupling.One element that is the same between the two forms of muscle is that calcium plays a starring role.Unfortunately, that is about the extent of the similarities.nlike skeletal muscle, smooth muscle is dependent on two sources of calcium in order to initiate contraction. These two sources are: 1  calcium sequestered in the S.R. of the smooth muscle cell.