Why does the heart beat?

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You probably already know that the heart is one of the most important organs in your body. Put your hand on your chest – can you feel it thump-thumping??

In order to survive, one of the most important things the human body needs is oxygen. You take in oxygen by breathing, and then your blood has the important job of carrying that oxygen all over your body from your head down to your toes! But the blood doesn’t just move on its own, and that’s where your heart comes in!

Your heart has the important job of pumping your oxygen-rich blood all throughout your body! – The beat-beat-beating sounds that you can feel or hear are made by the valves in your heart as they open and close to pump blood in and out!! Neat!


by   (whyzz writer)
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