As a domain expert in the field of human physiology, I can provide you with an accurate answer to your question.
Capillaries are the type of blood vessels where oxygen is released into the body cells. These vessels are the smallest and most numerous, forming a network that allows for the exchange of oxygen, nutrients, and waste products between the blood and the body's tissues. The walls of capillaries are very thin, which facilitates this exchange process.
read more >>