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. the link between excitation of muscle membrane and initiation of force generation at cross-bridges, producing muscle contraction. In all types of muscle this involves a rise in cytoplasmic calcium concentration [Ca 2+ ] but mechanisms for this rise differ substantially.xcitation-conduction-contraction. in the stimulation of muscle contraction this is the coupling which occurs at the sarcolemma-sarcoplasmic reticulum junction. Mediated by the release of calcium ions in the aqueous sarcoplasm.