WHEN nerve impulses bring about the development of tension in a muscle, depolarization of the muscle fibre membranes can be observed. The question arises: Is this depolarization directly responsible ...

Cardiac muscle tissue, or myocardium, is a type of muscle tissue that forms the heart. It contracts and releases involuntarily and keeps the heart pumping blood around the body. The human body ...

The ability to modify the intracellular concentrations of divalent calcium ions is vital to normal cell functioning. In the cells of the cardiac muscle, calcium ions play a crucial role in coupling ...