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How does the heart integrate oxygen into the blood?
Question Date: 2017-09-07
Answer 1:

It doesn't. That's the lungs' job. The heart just pumps the blood around.

The lungs provide a lot of surface area for oxygen in the air to bind to iron ions in the red blood cells, and then outgas the carbon dioxide that comes out as a waste product.

Answer 2:

When we breathe air into our lungs, it reaches small branched air sac structures within our lungs called alveoli. They are very small and have a lot of surface area. As blood is pumped by the heart past the alveoli, oxygen from the air diffuses into the blood. I hope this helps!

Answer 3:

The heart just pumps blood through the body, which is a huge job. Oxygen gets into the blood through the lungs. Blood gets oxygen from the lungs and moves it to the cells of the body, and then the blood goes back to the lungs and gets more oxygen. The heart and lungs are close together, so the oxygen-poor blood from the body goes into the heart on its way to the lungs, and the oxygen-rich blood from the lungs goes into the heart on its way to the lungs. You can read more about this:


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