Explain the working of the heart ??? with diagram............plzzz
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the heart is an organ which beats continously to act as a pump for the transport of blood, which carries other substance with it.The heart pumps 72 - 80 per minute if he/she is healthy.The heart is located in the chest cavity with its lower tip slightly tilted towards the left.The heart has four chambers.The two upper chambers are called Artria and two lower chambers are called Ventricles. the partition between the chambers help to avoid mixing up of blood in oxygen with the blood rich in carbon dioxide.
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