hiussuoniverkostosta

Hiussuoniverkostosta, or the capillary network, refers to the intricate web of tiny blood vessels that permeates virtually all tissues in the body. These vessels, known as capillaries, are the smallest in the circulatory system, with a diameter typically ranging from 5 to 10 micrometers, just wide enough for red blood cells to pass through in single file. Their primary function is to facilitate the exchange of essential substances between the blood and the surrounding cells.

This exchange includes delivering oxygen and nutrients to the tissues while simultaneously removing waste products like carbon dioxide and metabolic byproducts. The vast surface area provided by the extensive capillary network, coupled with the thin walls of the capillaries themselves (often only a single cell thick), optimizes this crucial diffusion process. This allows for efficient transport of vital materials to where they are needed and the swift removal of cellular waste.

The density of the capillary network varies significantly depending on the metabolic activity of the tissue. Highly active tissues, such as muscles and the brain, possess a more dense capillary supply to meet their high demands for oxygen and nutrients. Conversely, tissues with lower metabolic rates have a less extensive network. Understanding the structure and function of the hiussuoniverkosto is fundamental to comprehending tissue perfusion, nutrient delivery, and waste removal throughout the organism.