Question

How does the heart deliver oxygen to the body cells

Answer 1

Well its a little deeper than that. The oxygen transport is made through Hemoglobin (red blood cells) which is pumped from the heart

Answer 2

It is the heart pumps oxygenated blood to the rest of your body.

Step-by-step explanation:

It doesn't affect how oxygen and carbon dioxide exchange (which is done in the lungs), it only pumps the blood through the body. In simplest terms.