As it has to pump the blood to distant parts of the body, the left ventricle needs more energy than that is needed by the right ventricle. That is why the left lower chamber is thicker and stronger than the right lower chamber. When the heart fails to function properly, defect develops in the circulation of blood. Then different parts of the body fail to receive proper supply of the blood and then those organs get damaged. This damage may take place in the heart, brain, lungs, kidneys or any other part.
The blood reaching the right ventricle is pumped into the lings through Pulmonary Artery. This impure blood reaching the lungs gets purified in the lungs- that is, the blood leaves the carbon- dioxide and receives the oxygen. This purified blood leaves the lungs and reaches the left atrium in the heart through. Pulmonary veins and from there goes to the left ventricle. The purified blood re acting the left lower chamber is pumped out into various parts of the body. We must note one thing here. The two lower chambers of the heart- ventricles- pump the blood. But, the right ventricle pumps the blood only to the lungs very near to it, while the left ventricle pumps out to distant parts of the body.
The upper Atrium chambers function as the collecting stations while Ventricle chambers are like distributing stations of the blood. The four doors to the four chambers of the heart are called Valves. They help in letting in and letting out the blood, opening up and closing in, in a wink. If everything goes well, our heart pumps out 6500 liters or 1500 gallons of blood in a day. Through venacava, the impure blood without oxygen but, with carbon- dioxide, coming from different parts of the body reaches the right upper chamber called right atrium. From there it reaches the right lower chamber – the right ventricle.
There are four chambers in the heart. Two are on the right (front side) and two are on the left, behind the right chambers. The upper chambers which are a bit small in size are called Atrium. The lower chambers which are a bit big in size are called Ventricles. The right Atrium and the right Ventricle receive the blood coming from different parts of the body and pump into lungs. The left Atrium and the left Ventricle receives the blood with oxygen from the lungs and pump it to various parts of the body through Aorta. Different branches of Aorta carry the blood containing oxygen to different parts of the body.
Heart- the most important organ for life – is of the size of a fist, and is located in between the lungs, but towards a little left of the chest. This works like a pump, pumping the blood out of the lings and to the other parts of the body, throughout day and night with no break or rest. The greater part of the heart is built with Myocardium, a special type of muscle. This Myocardium functions on its own, with no external stimulation, expanding and contracting in a rhythmical manner, as long as oxygen and other nutrients are available to it.
Uncategorized | February 28, 2010 | 
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