❤️🩹Cardiac activity 🩻
Introduction : The human heart, a remarkable organ, orchestrates a symphony of activities to sustain life. This article delves into the intricacies of cardiac activities, exploring the anatomy, physiology, and the orchestrated dance of events that keep this vital organ ticking. Anatomy of the Heart: The heart comprises four chambers - two atria and two ventricles, each with a distinct role in the circulatory system. Delicate valves ensure unidirectional blood flow, while the muscular walls contract rhythmically, propelling blood throughout the body. Electrical Conduction System: At the core of cardiac activities lies an intricate electrical conduction system. The sinoatrial (SA) node initiates the heartbeat, sending electrical impulses through the atria, causing them to contract. The atrioventricular (AV) node then transmits signals to the ventricles, coordinating a synchronized contraction and ensuring efficient blood pumping. Cardiac Cycle: The cardiac cycle comprises systole an