1. The alveolar epithelium in the lungs is:

2. Aerobic respiratory pathway is also termed as ______ pathway.

3. Which one of the following is NOT correct?

4. The oxygen dissociation curve is shifted to the right by an increase in ______.

5. Which one of the followings is correct regarding larynx?

6.  Respiration in insects is called direct because

7. Very high number of alveoli present in a lung is meant for

8. Which of the following statements is true about Trachea in a respiratory system?

9. When CO₂ concentration in blood increases, breathing becomes:

10. Which one of the following mammalian cells is not capable of metabolising glucose to carbon-dioxide aerobically?

11. Intercostal muscles occur in:

12. The process of migration of chloride ions from plasma to RBC and of carbonate ions from RBC to plasma is:

13. The maximum volume of air that can be released from the lungs by forceful expiration after deepest inspiration is called the ______.

14. A person suffers punctures in his chest cavity in an accident without any damage to the lungs. Its effect could be

15. Which of the following statement is true?

16. Regarding the functions of our respiratory system, mark the wrong entry.

17. Azygous lobe is part of

18. Which organ lies in thoracic cavity?

19. The maximum volume of air contained in the lung by a full forced inhalation is called

20. Trachea divides into bronchi at