the heart
the heart
The heart sends "used" blood to your lungs so that the blood can reabsorb oxygen there. There are no weasels in the lungs.
no the right does
Lungs
It has to get oxygen and get rid of CO2
to the heart, lungs
The air sacs send oxygen to the cells.
blood and oxygen
either blood circulatory contracts heart vessels muscle oxygen pump or lungs
Your body picks up oxygen in your lungs. Your right ventricle pumps blood through your pulmonary artery to your lungs. Your blood picks up oxygen in your lungs. From there, it needs to get to the rest of your body. How can it do that? Something has to send it there. Let's send it through a vein to the heart. Maybe we can get the heart to send the oxygenated blood to the rest of the body. The pulmonary vein brings oxygenated blood from the lungs back to the heart. Then the heart takes that blood and pumps it through arteries to the rest of the body. After the oxygen leaves the blood it returns by way of veins. Under what conditions would a vein contain oxygenated blood?
The heats send blood to the veins which move around the whole body and the lungs also