Question

the structural and functional units of lungs are ​

Answer 1

Answer:

Lung tissue consists mainly of alveoli (Figure 16.2. ... These tiny air sacs are the functional units of the lungs where gas exchange takes place.

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Answer 2

Answer:

Lung tissue consists mainly of alveoli (Figure 16.2. 6). These tiny air sacs are the functional units of the lungs where gas exchange takes place. ... The blood in these capillaries also releases carbon dioxide into the air inside the alveoli.

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