The partial pressures (in mm Hg ) of oxygen ( O 2) and carbon dioxide ( CO 2) at alveoli (the site of diffusion) are:

Question

The partial pressures (in mm Hg ) of oxygen ( O 2) and carbon dioxide ( CO 2) at alveoli (the site of diffusion) are: (A) pO 2=104 and pCO 2=40 (B) pO 2=40 and pCO 2=45 (C) pO 2=95 and pCO 2=40 (D) pO 2=159 and pCO 2=0.3

Tardigrade Admin · Accepted Answer

In the alveolar air, the partial pressures of oxygen ( pO 2) is 104 mm Hg and that of carbon dioxide ( pCO 2) is 40 mm Hg.

Q. The partial pressures (in $mm H g$ ) of oxygen $(O_{2})$ and carbon dioxide $(C O_{2})$ at alveoli (the site of diffusion) are:

$p O_{2} = 104$ and $pC O_{2} = 40$

$p O_{2} = 40$ and $pC O_{2} = 45$

$p O_{2} = 95$ and $pC O_{2} = 40$

$p O_{2} = 159$ and $pC O_{2} = 0.3$

In the alveolar air, the partial pressures of oxygen $(p O_{2})$ is $104 mm H g$ and that of carbon dioxide $(pC O_{2})$ is $40 mm H g$ .

Q. The partial pressures (in mmHg ) of oxygen (O2​) and carbon dioxide (CO2​) at alveoli (the site of diffusion) are:

pO2​=104 and pCO2​=40

pO2​=40 and pCO2​=45

pO2​=95 and pCO2​=40

pO2​=159 and pCO2​=0.3