Which of the following statements about partial pressures of gases is TRUE? A) P_O2 in lung is greater than P_O2 in blood; P_CO2 in lung is greater than P_CO2 in blood B) P_O2 in lung is greater than P_O2 in blood; P_CO2 in lung is less than P_CO2 in blood C) P_O2 in lung is greater than P_O2 in blood; P_CO2 in lung = P_CO2 in blood D) P_O2 in lung is less than P_O2 in blood; P_CO2 in lung is less than P_CO2 in blood E) P_O2 in lung is less than P_O2 in blood; P_CO2 in lung is greater than P_CO2 in blood

Question

Quizplus · Accepted Answer

In the lungs, the partial pressure of oxygen (PO2) is greater than in the blood, while the partial pressure of carbon dioxide (PCO2) is lower. Therefore, the correct choice is B, which states that P_O2 in lung is greater than P_O2 in blood and P_CO2 in lung is less than P_CO2 in blood.

Which of the Following Statements About Partial Pressures of Gases