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What is True statement regarding difference between apex and base of lung, in erect posture is:March 2012, March 2013 and explain in detail?
Ans: B i.e. V/ Q is high at the apex of lungV/ Q changes from region to region of the lung.Thus in apical zone in the erect posture, Q (perfusion) is very low and therefore V/ Q ratio is high. While at the bases, it (V/ Q) is low