How The Oxygen You Breathe Gets Delivered to the Cells of Your Body?

The oxygen you breathe travels through your body like a tiny train to deliver its cargo, oxygen, to all your cells.

Imagine you're on a fun ride through a tunnel. That's kind of what happens when you breathe in. The air goes down your nose or mouth, into your lungs, which are like big balloons that fill up with air. When you inhale, these balloons stretch out and take in the oxygen from the air.

Now, think of your blood as a delivery truck. Tiny helpers called red blood cells ride inside this truck. These red blood cells carry the oxygen all over your body, like how a mail truck drops off letters to every house in town.

When you exhale, the truck goes back through the tunnel and out your nose or mouth, carrying away the carbon dioxide, which is like the waste from your cells’ little factories.

1. You take a breath, air (with oxygen) goes into your lungs.
2. Your blood picks up the oxygen in your lungs.
3. The blood carries it all over your body to give energy to every cell.
4. Cells use the oxygen and send back carbon dioxide as waste.
5. You breathe out, sending that waste away.

It’s like a tiny, never-ending delivery route, but inside you!