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Exchange of gases-
  • a)
    Occurs between the alveoli and pulmonary blood capillary 
  • b)
    Occurs between  blood and tissue 
  • c)
    By diffusion
  • d)
    All of these 
Correct answer is option 'D'. Can you explain this answer?
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Exchange of gases-a)Occurs between the alveoli and pulmonary blood cap...
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Exchange of gases-a)Occurs between the alveoli and pulmonary blood cap...
Gas exchange takes place in the millions of alveoli in the lungs and the capillaries that envelop them. Inhaled oxygen moves from the alveoli to the blood in the capillaries, and carbon dioxide moves from the blood in the capillaries to the air in the alveoli.
Gas exchange during respiration occurs primarily through diffusion. Diffusion is a process in which transport is driven by a concentration gradient.
The air in the lungs has a higher concentration of oxygen than that of oxygen-depleted blood and a lower concentration of carbon dioxide.
Hence, the answer would be 'All of the above'.
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Exchange of gases-a)Occurs between the alveoli and pulmonary blood capillaryb)Occurs between blood and tissuec)By diffusiond)All of theseCorrect answer is option 'D'. Can you explain this answer?
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