Verenkiertoinen

Verenkiertoinen refers to the circulatory system, a network of organs and vessels that transports blood throughout the body. This system is essential for delivering oxygen and nutrients to cells and removing carbon dioxide and waste products. The primary components of the circulatory system are the heart, blood vessels (arteries, veins, and capillaries), and blood itself. The heart acts as a pump, continuously propelling blood through the vessels. Arteries carry oxygenated blood away from the heart, while veins return deoxygenated blood to the heart. Capillaries are tiny vessels where the exchange of gases, nutrients, and waste occurs between the blood and tissues. Blood is a fluid connective tissue composed of plasma, red blood cells, white blood cells, and platelets, each with specific functions in transport, immunity, and clotting. The circulatory system is broadly divided into two main circuits: the pulmonary circulation, which carries blood between the heart and lungs for oxygenation, and the systemic circulation, which distributes oxygenated blood to the rest of the body and returns deoxygenated blood to the heart. Maintaining healthy circulation is crucial for overall health and the proper functioning of all bodily systems. Disruptions to the circulatory system can lead to various cardiovascular diseases.