Respiration, Circulation and Excretion - Question Bank
1. The removal of undigested food material from the body is called:
2. Which part of the heart contains oxygenated blood?
3. What is the main function of the urethra?
4. The exchange of gases between blood and body tissues occurs in:
5. Which of the following is a mechanism of excretion for excess salts and water in the body?
6. What is the primary function of white blood cells in the circulatory system?
7. The process of breathing is controlled by a respiratory center located in the:
8. Which organ produces bile, which aids in digestion and waste removal?
9. What is the condition where blood pressure is consistently higher than normal?
10. Which part of the respiratory system filters, warms, and moistens inhaled air?
11. In the nephron, the process of returning useful substances from the filtrate back into the blood is called:
12. What is the primary role of the vena cava?
13. The rhythmic contraction and relaxation of the heart muscle is known as:
14. Which of the following is a significant waste product removed by the lungs?
15. What is the main function of the ureters?
16. The process by which the kidneys filter blood and remove waste products is called:
17. Which valves in the heart prevent the backflow of blood from the ventricles into the atria?
18. What is the primary role of hemoglobin in respiration?
19. The exchange of gases in the lungs occurs via:
20. What is the role of the aorta?
21. What is the role of the pulmonary artery?
22. Which of the following is NOT a function of the circulatory system?
23. The skin excretes waste products in the form of:
24. Besides the kidneys, which organ also excretes waste products like carbon dioxide?
25. What is the process of eliminating urine from the body called?
26. Where is urine stored before being eliminated from the body?
27. The tubes that carry urine from the kidneys to the bladder are called:
28. What waste product, primarily composed of nitrogen, is excreted by the kidneys?
29. What is the functional unit of the kidney responsible for filtering blood?
30. Which organ is the main site of excretion in the human urinary system?
31. What is the primary function of the excretory system?
32. The process of blood circulation from the heart to the rest of the body and back is known as:
33. The process of blood circulation from the heart to the lungs and back is known as:
34. What is the fluid part of the blood that transports dissolved substances?
35. The smallest blood vessels where exchange of substances occurs between blood and tissues are:
36. What are the blood vessels that carry blood towards the heart called?
37. What are the blood vessels that carry blood away from the heart called?
38. Which chamber of the human heart pumps oxygenated blood to the rest of the body?
39. Which chamber of the human heart receives oxygenated blood from the lungs?
40. Which chamber of the human heart pumps deoxygenated blood to the lungs?
41. Which chamber of the human heart receives deoxygenated blood from the body?
42. What is the main organ of the circulatory system?
43. The circulatory system is responsible for:
44. What substance in red blood cells is responsible for transporting oxygen?
45. In which blood vessels does gas exchange occur between the blood and the alveoli?
46. What muscular structure is located below the lungs and plays a key role in breathing?
47. The movement of air into and out of the lungs is called:
48. What gas is released from the lungs during exhalation?
49. What gas is taken in by the lungs during inhalation?
50. Which part of the human respiratory system is the main site of gas exchange?