How the heart works?

the heart has two pumps. each pump has two chambers , the upper and lower chambers . the upper chambers is the atrium that receives blood coming in from the veins . the lower chamber is the ventricle that forces the blood out into the arteries . there is a valve between each atrium and ventricle to prevent the blood from flowing backwards . the valves are like one-way doors that keep the blood moving in only one direction . valves Control movement of blood into the heart chambers and out to the aorta and the pulmonary artery .

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Answers

2016-06-29T16:27:46+08:00
The heart works like a pump and beats 100,000 times a day. The heart has two sides seperated by an inner wall called septum. \

do you know ? The heart never stops pumping blood ? 

The blood from the different body parts enters the atria of the heart through major blood vessels such as the vena cavae ( to the right atrium ) and the pulmonary veins ( to the left atrium ). 
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