How Does Oxygen Enter the Bloodstream?


Oxygen enters the bloodstream through the air we breathe. First it goes to the lungs where it is absorbed by capillaries. From there it enters the bloodstream.
Q&A Related to "How Does Oxygen Enter the Bloodstream?"
It only takes about 15 minutes for chocolate to enter the bloodstream. Although it takes up to 3 hours to get it out of your bloodstream. This is caused by many things including the
A few seconds. Blood has to get from the lungs, where it is oxygenated, back to the heart, which takes a couple of beats. Then it has to be pumped up to the brain, which takes a few
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We learned as children that tiny and hopefully nutritious
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