What is the partial pressure of Oxygen $(PO_2)$ and Carbon dioxide $(PCO_2)$ in the alveoli?

  • A
    $PO_2 = 159 \, mm \, Hg$ and $PCO_2 = 0.3 \, mm \, Hg$
  • B
    $PO_2 = 104 \, mm \, Hg$ and $PCO_2 = 40 \, mm \, Hg$
  • C
    $PO_2 = 40 \, mm \, Hg$ and $PCO_2 = 45 \, mm \, Hg$
  • D
    $PO_2 = 95 \, mm \, Hg$ and $PCO_2 = 40 \, mm \, Hg$

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Similar Questions

Which structure of the lungs is directly involved in $O_2 / CO_2$ exchange between air and blood capillary?

What are the layers encountered by $O_2$ as it passes through the diffusion membrane from the start to the end?

Which are the three main layers that form the diffusion membrane?

Compared to $O_2$,the diffusion rate of $CO_2$ through the diffusion membrane per unit difference in partial pressure is much higher. Explain.

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