Question

(b) Name the part where exchange of gases takes place.
Look at the given diagram and answer the questions.
(a) Label the parts 1-4.​

Answer 1

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Exchange of gases takes place in Capillaries.

Answer 2

b. 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.

a.