Articles > Quizzes & Surveys > Respiration – Quiz Respiration – Quiz Quiz Select the best answer from the parenthesis. Write your answer in the space provided. 1. The hollow sacs that act as sites of gas exchange are called ( capillaries / alveoli ). 2. The zone of the airways where there is no gas exchange is the ( conducting zone / respiratory zone ). 3. Lung volume depends on the ( transpulmonary pressure / lung compliance ), which refers to the capacity of the lungs for being stretched. 4. The diaphragm and intercostal muscles relax during ( inspiration / expiration ) 5. ( Hypoxia / Hypercapnia ) is the deficiency of oxygen at the tissue level. Send Your Results (Optional) Your Name To Email Time is Up!