The value of the circulatory system for metabolism.

The circulatory system is connected to all other systems. It is very important for metabolism. And this is not only the exchange of carbon dioxide and oxygen during breathing. The circulatory system also transports nutrients to various tissues and organs. They enter the bloodstream after food is broken down in various parts of the digestive system. These substances travel with the blood as this is the fastest delivery method. Every minute blood bypasses our body a little more than two times (one passage takes 27 seconds).