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Q. Where does exchange of gases (O2 and CO2) take place in our lungs?
Answer: Alveoli
Notes: Gas exchange takes place in the millions of alveoli in the lungs and the capillaries that envelop them. As shown below, inhaled oxygen moves from the alveoli to the blood in the capillaries, and carbon dioxide moves from the blood in the capillaries to the air in the alveoli.

This question is part of 40000+ MCQs GKToday PCS Mock Tests Series in GKToday Android app.

Question Number: 40 in GKToday PCS Mock Test - 190 in above course in App.