Question

In which part of lungs gaseous exchange takes place in human.
a) trachea and alveolar duct
b) terminal bronchiole and respiratory bronchiole
c) alveolar duct and alveoli
d) tertiary bronchi and atria​

Answer 1

(c) Alveolar duct and alvoeil.

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Answer 2

Explanation:

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