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YOUR BEATING HEART

Your heart is a very strong muscular body.

It is about the size of your fist.

 
   

Your heart is divided into two sides by a wall.

Each side is divided by a floor into an upper and lower room.

 

 

 

The right side of your heart always fills with impure blood from the body.       The left side of your heart always fills with pure blood from the lungs.