Kapillárakerfi

Kapillárakerfi refers to the smallest blood vessels in the body, forming a network that connects arterioles and venules. These microscopic vessels are crucial for the exchange of oxygen, nutrients, and waste products between the blood and the body's tissues. The walls of capillaries are extremely thin, typically only one cell thick, which facilitates efficient diffusion.

The capillary network is extensive, with trillions of capillaries distributed throughout nearly every tissue and organ. This vast network ensures that all cells receive the necessary supply of oxygen and nutrients for their metabolic processes and that waste products are effectively removed. Blood flow through the capillaries is regulated by precapillary sphincters, which can constrict or relax to control the amount of blood entering specific capillary beds based on the metabolic needs of the surrounding tissues.

When blood flows through the capillaries, oxygen and nutrients are released from the red blood cells and plasma into the interstitial fluid, and then into the cells. Simultaneously, carbon dioxide and other metabolic waste products move from the cells into the interstitial fluid and then into the blood to be transported away. This vital process of exchange is the primary function of the capillary system and is essential for maintaining homeostasis and the proper functioning of all bodily systems. Disruptions to the capillary system can lead to various health issues, highlighting its critical role in overall health.