The lungs are the respiratory organ which allows the take-up of oxygen and the release of CO2. They are present in most animals which breathe air including many fish species.

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Pathogenesis of Chronic Venous Congestion in Lungs?

I am thinking how CVC in lungs lead to the left-sided heart failure.
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How far does the diaphragm stretch when it contracts?

I have been wondering about this for this entire day today and I can't seem to find an answer. How far, exactly, does the diaphragm stretch for tidal breathing and what is its maximum stretch length?
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Can pulmonary infarction be asymptomatic?

I think it can because there are many parts in lungs. Like for some COPD patients. However, I am not sure if COPD patients can have infarction. Lungs have parallel circulation. Red infarct is ...