veriväyläverkosto

Veriväyläverkosto refers to the circulatory system, also known as the vascular system, within a biological organism. This complex network is responsible for transporting blood, nutrients, oxygen, hormones, and waste products throughout the body. It comprises a central pump, the heart, and a system of vessels, including arteries, veins, and capillaries.

Arteries carry oxygenated blood away from the heart to the rest of the body, typically under high pressure. As they branch out, they become smaller arterioles. Veins, on the other hand, return deoxygenated blood from the body back to the heart, usually operating under lower pressure and often containing valves to prevent backflow. Smaller veins are called venules.

The smallest and most numerous vessels are the capillaries. These are extremely thin, one-cell-thick tubes that form a mesh within tissues. It is at the capillary level that the crucial exchange of oxygen, carbon dioxide, nutrients, and waste products occurs between the blood and the body's cells. The continuous movement of blood through this vast network is essential for maintaining life and enabling all bodily functions. Diseases affecting the veriväyläverkosto can have widespread and serious consequences for an organism's health.