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Our heart has 4 chambers. 
2Autrium and 2 Ventricles.
Autrium receives blood from 2 main veins.
Ventricle transports blood to entire body and lungs.
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Human heart is 4 chambered
contains Auricles, ventricles, aorta,superior and inferior venacavae , pulmonary artery,pulmonary veins, Av valves, semi lunar valves etc......
pulmonary artery pumps impure blood into the lungs
Pulmonary veins collect pure blood from the lungs
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Hope it helps. Plzzz mark it as brainliest ^_^
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