What Is a Heart?

In order for creatures to get larger, they had to evolve systems that allowed those materials to move in and out of the body. And so wod av oll e these systems of tubes and pumps to help distribute that liquid,. which became the carrier for oxygen and nutrients and wasten and carbon dioxide. The heart especially from the human perspective on all this additional symbolic weight. So we're talking abouta involuntary muscle, so its not under your conscious control.