Systemic venous PO₂ is _____ alveolar PO₂,and systemic venous PO₂ is _____ alveolar PO₂.
A) greater than, greater than
B) greater than, less than
C) less than, greater than
D) less than, less than

Question

Quizplus · Accepted Answer

Systemic venous blood has lower PO₂ due to oxygen being consumed by tissues, whereas alveolar PO₂ is higher due to oxygen exchange occurring in the lungs. Therefore, systemic venous PO₂ is generally less than alveolar PO₂.

Systemic Venous PO₂ Is _____ Alveolar PO₂,and Systemic Venous PO₂