Biology Practice: Respiratory System (Mock Test 2 - Anatomy & Functions)
1. Which of the following structures is commonly referred to as the "Windpipe"?
2. What is the primary function of the "Cilia" in the respiratory tract?
3. The fluid found between the two pleural membranes that reduces friction during breathing is:
4. Which part of the brain contains the respiratory center that controls the rate of breathing?
5. The Cartilaginous rings of the trachea are "C-shaped" rather than complete circles because:
6. During inspiration, the External Intercostal Muscles:
7. Which of the following describes the "Larynx"?
8. What happens to the volume of the Thoracic Cavity when the diaphragm flattens?
9. Which gas is a major stimulant for the breathing center in the brain?
10. The exchange of gases between the blood and the tissue cells is known as:
11. Why is nasal breathing considered healthier than mouth breathing?
12. The percentage of Carbon Dioxide in inspired air is approximately:
13. Which structure prevents the entry of food into the Nasal Cavity during swallowing?
14. The combination of hemoglobin with Carbon Monoxide ($CO$) forms a stable compound called:
15. "Dead Space" air refers to:
16. The "Adam's Apple" is a prominent part of which cartilaginous structure?
17. In humans, the right lung has how many lobes?
18. During exhalation, the ribs move:
19. Which of these conditions is characterized by the breakdown of alveolar walls, often due to smoking?
20. The partial pressure of Oxygen is highest in:
