Question

why does blood that becomes oxygenated in the lungs goes back to the heart instead of going directly to the body to deliver that oxygen?

Answer 1

blood that becomes oxygenated in the lungs goes back to the heart instead of going directly to the body to deliver that oxygen BECAUSE THE PRESSURE IN THAT BLOOD IS TWO LOW TO FLOW, SO TO INCREASE THE PRESSURE IT IS SENT TO HEART WHICH INCREASES ITS PRESSURE BY BEATING.