What are the capillaries?

capillaries are small blood vessels that pass through blood from arteries to veins. They are very small, the largest is the diameter of about 10 micrometers. Their walls are thin, allowing the materials to go into them. There are different types of capillaries and perform different functions for the body. Primarily, however, they are capable of abundant tissues of the body with the necessary oxygen and important nutrients supplied with blood.

There are three types: continuous, pheneored and sinus. They differ in construction and in the degree to which things outside the capillaries to get into them. All vessels have an endothelial wall with a different degree of permeability depending on the type.

Continuous capillaries have the strongest endothelial wall. They only allow water and ions to their travels. Phenestrated capillaries have "windows" that allow larger molecules in and out. Sinusoidal capillaries have the largest amount of red blood blood cells and proteins in the endothelial walls.

While capillaries act in one respect as "The "arteries and veins are also small blood vessels that supply blood to the organs. Those who supply blood into the organ are called a capillary bed.

In addition to being transporters of blood products, capillaries allow access to waste products. In this way, they perform an important function because the waste is eventually transported from the body by this exchange.

The amount of capillaries in the human body is quite amazing. If one could calculate and measure everything in an average adult person, it would find about 25,000 miles (40 233.6 km). The extensive bodies of the body indicate their extreme importance for our existence and health.