(Based on the provided diagram — simplified/basic heart flow representation) 🔰 Overview of Blood Circulation Through the Heart ◾ The human heart pumps blood through two major circuits: pulmonary (lungs) and systemic (body). 🔹 Pulmonary circulation carries deoxygenated blood to the lungs for oxygenation. 🔹 Systemic circulation distributes oxygenated blood from the heart to all body tissues. ◾ The right side of the heart handles deoxygenated blood, while the left side handles oxygenated blood.

How does blood move through the heart — and how does the heartbeat coordinate it? This 3D animation uses an anterior cross-section to show the sequence clearly: The atria collect incoming blood from the body and lungs The ventricles contract in a powerful motion to eject blood Four valves prevent backflow and ensure unidirectional movement The entire sequence is powered by the heart's built-in conduction system This view gives rare insight into one of the body’s most critical functions. Based on