What is the function of the heart?

The heart is a vital organ responsible for pumping blood throughout the body, supplying oxygen and nutrients to tissues while removing carbon dioxide and waste products. It is a muscular organ divided into four chambers: two atria and two ventricles. The heart’s rhythmic contractions are controlled by electrical impulses generated in the sinoatrial (SA) node, often referred to as the natural pacemaker. Blood circulates through two main systems: the pulmonary circuit, which oxygenates blood in the lungs, and the systemic circuit, which distributes it to the rest of the body. Maintaining heart health through exercise, a balanced diet, and regular check-ups is essential for overall well-being.