Definition
Plexus cardiacus is the Latin term for the cardiac plexus, a network of autonomic nerve fibers situated at the base of the heart. This plexus regulates heart rate, contractility, and coronary blood flow via sympathetic and parasympathetic inputs. It acts as the heart's intrinsic nervous control center, modulating cardiac function in response to various physiological demands. Think of it as the heart's own sophisticated control panel, adjusting performance as needed. Disruptions to the plexus cardiacus can lead to arrhythmias and other cardiac dysfunctions.