For gas exchange to be efficient, the respiratory membrane must be ________. between 5 and 6 micrometers thick0.5 to 1 micrometer thickat least 3 micrometers thickThe thickness of the respiratory membrane is not important in the efficiency of gas exchange.
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The respiratory membrane is the barrier between the air in the alveoli and the blood in the capillaries, where gas exchange occurs. Show more…
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