NEET2021ZoologyBreathing and Exchange of GasesActual
The partial pressures (in mmHg ) of oxygen O 2 and carbon dioxide CO 2 at alveoli (the site of diffusion) are:
Options
- Ap O 2 = 104 and p C O 2 = 40
- Bp O 2 = 40 and p C O 2 = 45
- Cp O 2 = 95 and p C O 2 = 40
- Dp O 2 = 159 and p C O 2 = 0 . 3
Correct answer
A. p O 2 = 104 and p C O 2 = 40
Step-by-step solution
Partial pressures (in mmHg ) of O 2 and CO 2 at different sites of the body and in the atmosphere: Respiratory Gases Atmospheric pressure Alveoli Oxygenated Blood Deoxygenated Blood Tissues O 2 159 104 95 40 40 CO 2 0 . 3 40 40 45 45