Frequently asked question: How do the organs in the body receive oxygen (fuel)?

Oxygen is a very important fuel for the cells in your body. You breathe in the oxygen through your lungs, where it crosses into the bloodstream. In the blood, the oxygen binds to the hemoglobin in the red blood cells. The red bloods cells are transported across the body, delivering oxygen to cells all over the body. This is how your organs, such as your brain, kidneys, liver, or muscles, get the energy they need.

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