Südamefunktsioon

Südamefunktsioon refers to the physiological processes by which the heart pumps blood throughout the body. This essential function sustains life by delivering oxygen and nutrients to all tissues and organs, while simultaneously removing waste products. The heart is a muscular organ that operates as a dual pump. The right side of the heart receives deoxygenated blood from the body and pumps it to the lungs for oxygenation. The left side of the heart receives oxygenated blood from the lungs and pumps it to the rest of the body.

The pumping action is driven by a coordinated sequence of contractions and relaxations of the heart muscle, known as the cardiac cycle. This cycle involves the opening and closing of four valves: the tricuspid, pulmonary, mitral, and aortic valves. These valves ensure unidirectional blood flow, preventing backflow. Electrical impulses, generated by specialized cells in the heart's sinoatrial (SA) node, initiate and regulate these contractions, maintaining a regular heart rhythm.

The efficiency of Südamefunktsioon can be assessed through various measurements, including heart rate, stroke volume (the amount of blood pumped per beat), and cardiac output (the total amount of blood pumped per minute). Factors such as age, physical activity, diet, and underlying health conditions can influence Südamefunktsioon. Maintaining optimal heart function is crucial for overall health and well-being.