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| 1. |
Desribe how the human heart works |
| Answer» The deoxygeneted blood all over the body reaches to right autium of our heart with the help of superior and inferior vena cava . which dilate while receiving the blood and contract to send the blood into right ventricle on receiving the blood it contract to send the blood into lungs (where blood become oxyeneted ) then furthur send to left autrium which contract on receiving the blood to send it into left ventricle which expand during receiving the blood and contract to send the blood throughout the body. | |