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Pneumonia is the inflammation of the lungs due bacterial or viral infection, in which the air sacs fill with pus.

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Gas Exchange is the diffusion of gases from an area of higher concentration to an area of lower concentration, especially the exchange of oxygen and carbon dioxide. The main goal is to transfer oxygen from inhaled air into the blood and the transfer or carbon dioxide from the blood into the exhaled air.

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Gas Exchange in Lungs Physiology Video Animation - MADE EASY

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External respiration is gas exchange between the alveoli and the blood.

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Without external respiration oxygen cannot diffuse into the blood and carbon dioxide cannot diffuse into the alveolar air.

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What impact will pneumonia have on the body

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What impact will pneumonia have on the body

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Since important gas exchange takes places within the alveolar sacs, pneumonia (the filling of these sacs with pus) prevents the exchange from happening. Without this exchange, carbon dioxide cannot leave the body. The brain must figure out a way to overpower the carbon dioxide with oxygen, so the individual will begin to breathe more. Eventually, with untreated pneumonia and therefore decreased gas exchange, can cause death, as the body is unable to obtain the necessary oxygen to perform cellular respiration.