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What is the process of gas exchange in the human body?
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The human gas-exchange process transfers the gases contained by the human blood in exchange for the gases found in atmosphere. The human gas exchange process happens in the lungs and this process is accomplished by the mechanisms of the heart. The process of movement of the air in and out of the lungs is called ventilation.
Humans have closed circulatory system or two-circuit circulatory systems, the pulmonary circuit and the systemic circuit.
Hence, the pulmonary circulation represents the circulation of the deoxygenated blood from the right ventricle of the heart to the lungs, through pulmonary artery, for oxygenation purposes, and then, back, from lungs, through pulmonary veins, to the left atrium of the heart.
The systemic circulation transports the oxygenated blood from the heart to the body and it carries back the deoxygenated blood from the body to the heart. In the systemic circulation the arteries carry the oxygenated blood to the tissues and the veins transport the deoxygenated blood back to the heart.
The advantage of the systemic circulation is that the blood that is delivered throughout the body has the same pressure at every point.
Posted by sciencesolve on March 6, 2014 at 5:56 PM (Answer #1)
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