The partial pressures (in mm Hg) of oxygen (O
2
) and carbon dioxide (CO
2
) at alveoli (the site of diffusion) are:
- ApO
2
=95 and pCO
2
=40 - BpO
2
=159 and pCO
2
=0.3 - CpO
2
=104 and pCO
2
=40 - DpO
2
=40 and pCO
2
=45
Solution & Step-by-step Explanation
In the alveoli:
Partial pressure of Oxygen (pO
2
) = 104mm Hg
Partial pressure of Carbon dioxide (pCO
2
) = 40mm Hg
These gradients facilitate the diffusion of O
2
into the blood and CO
2
into the alveoli.
Partial pressure of Oxygen (pO
2
) = 104mm Hg
Partial pressure of Carbon dioxide (pCO
2
) = 40mm Hg
These gradients facilitate the diffusion of O
2
into the blood and CO
2
into the alveoli.