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.
Medical Definition of COUPLING. 1. : the joint together with its supporting structures between the last lumbar vertebra and the sacrum that joins the hindquarters of a quadruped to the trunk; broadly: the part of the body or the conformation and proportionate length of the part of the body that joins the hindquarters to the forequarters. 2.