Question

Respiratory exchange part of the respiratory system consists of​

Answer 1

Answer:

In the lungs, the main-stem bronchi divide into smaller bronchi. The smaller bronchi divide into even smaller tubes (bronchioles). Bronchioles end in tiny air sacs (alveoli) where the exchange of oxygen and carbon dioxide occurs.

Answer 2

In the lungs, the main-stem bronchi divide into smaller bronchi. The smaller bronchi divide into even smaller tubes (bronchioles). Bronchioles end in tiny air sacs (alveoli) where the exchange of oxygen and carbon dioxide occurs.