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Wednesday 2 April 2014

Why do hearts beat?

       Why do hearts beat?
Your heart pumps blood  through your body. What does your heart do?

With every beat of your heart blood is pumped through tiny tubes. The blood goes around the body so you can move. The blood is pumped with oxygen. The blood goes through tiny tubes called veins. They are connected to every part of your body.

While you're running,  you need more oxygen. As you run, your heart beats faster and faster so that it can circulate to the muscles. This is why you can feel your body heating up and pulse getting faster and faster.
 
Our blood has four main components. They are red blood cells, white blood cells, liquid and plasma. There also cells called neutrophil, eosinophil, monocyte, lymphocyte, basophils and platelets.

When your heart beats, your blood gets pushed through tubes in your body. These tubes are connected to smaller tubes. They go every part of your body. This is called the circulatory system.

Your heart powers your whole body and that is what makes you move.


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