Question

Please explain your answer and indicate whether each option is correct or incorrect.

QUESTION 4 Indicate whether each statement is correct or incorrect regarding gas pressures and diffusion. A correct B. # PA02 increases as barometric pressure increases incorrect # PA02 increases as PaCO2 increases PAO2 increases as the alveolar membrane becomes thicker -PAO2 increases as diffusion decreases because of back pressure

Answer 1

1. The statement is correct.

PAO2 is the alveolar oxygen and barometric pressure is the atmospheric pressure.

Increased barometric pressure influences the alveolar oxygen.

Increase in barometric pressure increases the alveolar oxygen.

2. The statement is incorrect.

PaCO2 is the partial pressure of oxygen. It increases with increased CO2. It increases due to hypoventilation and decreases due to hyperventilation.

When PaCO2 increases PAO2 decreases.

3. The statement is correct.

Thicker the alveolar membrane slower the diffuse which results in high alveolar oxygen.

4. The statement is correct

When the diffusion decreases, the O2 and CO2 exchange is affected. This leads to oxygen accumulation in the alveoli.