In which organs and tissues of the human body the number of capillaries is greater and in which less?

A large number of capillaries will be concentrated in those organs and tissues where constant rapid gas exchange and the receipt of nutrients are needed. The lungs have a very large capillary network for gas exchange. There are many blood vessels in the brain, as this is the most energy-consuming organ. He needs a constant supply of oxygen and nutrients, as he performs many processes. In other organs, there are not so many capillaries as in the brain and in the lungs, but there are still quite a lot of them to supply cells.