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.
Exocytosis. Exocytosis is a process in which an intracellular vesicle (membrane bounded sphere) moves to the plasma membrane and subsequent fusion of the vesicular membrane and plasma membrane ensues. Many cellular processes involve exocytosis. For example a few of the processes that use exocytosis are:secretion of proteins like enzymes, peptide hormones and antibodies from cells. turnover of plasma membrane. release of neurotransmitter from presynaptic neurons. placement of integral membrane proteins.any cellular processes involve exocytosis. For example a few of the processes that use exocytosis are: secretion of proteins like enzymes, peptide hormones and antibodies from cells. turnover of plasma membrane.