11. Which row shows substances that are present in each of the structures of excretory system of a healthy human?

10. Lithotripsy is a procedure that breaks large kidney stones into smaller ones by using:

9. Which blood vessel carries blood with the lowest concentration of urea?

8. In a kidney machine, which of the following passes from the blood to the dialysis fluid?

7. The four structures listed are part of the human excretory system. 1. bladder 2. Kidney 3. ureter 4. Urethra. In which order does a molecule of urea pass through these structures?

6. In a kidney machine what must be at the same concentration in the dialysis fluid and in the blood?

5. Which substance is present at a lower concentration in the renal artery than in the renal vein?

4. Where is urea produced?

3. Urine passes from bladder to the:

2. Osmoregulation involves:

1. Nephron, the functional unit of kidney is composed of all of the following except:

15. Which row correctly describe the functions of the diaphragm, cilia and mucous in human gaseous exchange system?

14. Which one of the following row best describes the action of different structures associated with the process of inhalation?

13. The percentage of oxygen gas in inspired is 21% and in expired air it is 16%. This difference in the amount of oxygen gas is due to the:

12. In asthma, shortness of breath occurs due to:

11. Which blood vessel surrounds the alveoli?

10. The disease involving breakdown of air sacs of the lungs is:

9. The gas exchange portion of the human respiratory system is the:

8. Respiration in living organisms always involves:

7. When you inhale, the diaphragm:

6. Which path does a molecule of oxygen take as it enters the body?

5. Which process does not use energy released by respiration?

4. What is the percentage of oxygen in expired air when a person is resting?

3. The inner most chamber of the respiratory system into which air can be drawn:

2. In humans during expiration: