In which location would the partial pressure of oxygen be the lowest?
A)inhaled air
B)exhaled air
C)alveoli
D)pulmonary veins
E)pulmonary arteries

Question

In which location would the partial pressure of oxygen be the lowest? ​
A)inhaled air
B)exhaled air
C)alveoli
D)pulmonary veins
E)pulmonary arteries ​

Quizplus · Accepted Answer

The partial pressure of oxygen is lowest in the pulmonary arteries because this is where the blood is returning from the body and has offloaded oxygen to the tissues, thus carrying the highest amount of carbon dioxide and the lowest amount of oxygen before it gets reoxygenated in the lungs.

In Which Location Would the Partial Pressure of Oxygen Be