Action Potential Heart Contraction

Action Potential Heart Contraction

A heart physiology illustration linking action potentials to contraction demonstrates how electrical signals drive each heartbeat. It traces the spread of an action potential through cardiac muscle cells, beginning with…
Heart Musculature

Heart Musculature

The heart's muscular wall, the myocardium, consists of specialized cardiac muscle cells arranged in spiral and circular bundles unique to each chamber. Atrial muscle is thinner and arranged in loops,…