Wednesday, April 20, 2011. The heart is slightly larger than a clenched fist and works as a pressure pump and suction. The right side of the heart receives poorly oxygenated blood from the body via the superior and inferior vena cava and pumps it through the pulmonary trunk and arteries to the lungs for oxygenation. The heart is comprised of four chambers which are the left and right atria and the left and right ventricles. A large shunt increases pulmonary blood .

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I was beaten today,. Tossed by the tides of time. So I retreated like a child. Tea and an old book. And once again they held my hand,. And steered me through the night.