véredényrendszer

The circulatory system, also known as the cardiovascular system or véredényrendszer in Hungarian, is a complex network responsible for transporting blood throughout the body. This vital system comprises the heart, blood vessels, and blood itself. The heart, a muscular organ, acts as a pump, rhythmically contracting to propel blood through the vessels. Blood vessels are categorized into arteries, veins, and capillaries. Arteries carry oxygenated blood away from the heart to the body's tissues, while veins return deoxygenated blood back to the heart. Capillaries are tiny, thin-walled vessels where the exchange of oxygen, nutrients, and waste products occurs between the blood and the surrounding cells.

The blood circulating within the system is a fluid connective tissue composed of plasma, red blood cells, white blood cells, and platelets. Red blood cells are crucial for oxygen transport, white blood cells play a role in immunity, and platelets are involved in blood clotting. The circulatory system performs numerous essential functions, including delivering oxygen and nutrients to all cells, removing carbon dioxide and metabolic waste products, regulating body temperature, and transporting hormones and immune cells. Its efficient functioning is critical for maintaining overall health and survival. Disruptions to the circulatory system can lead to various health problems, such as heart disease, stroke, and hypertension.