The urinary system consists of the kidneys, ureters, urinary bladder, and urethra. The kidneys filter waste from the blood and regulate fluid levels, producing urine. The urine travels from the kidneys down the ureters and into the urinary bladder, where it is stored until excretion through the urethra. The main functions of the urinary system are removal of waste, storage of urine, and excretion of urine.

1. Urinary System

2. What are the organs of the urinary system?KidneysUreterUrethraUrinary Bladder

3. What are the organs of the urinary tract?UreterUrinary bladderUrethra

4. What are the main functions of the Urinary system?Removal of wasteStorage of urineExcretion of urineRegulation of blood PH levelsRegulation of blood fluid volume levels

5. Where are the kidneys located?The superior pole of the kidney is located around thoracic vertebrae number 12.The inferior pole is located around lumbar vertebrae number 3.

6. Label: Renal cortex, renal medulla, renal pyramids, renal columns, and renal papilla.

7. Label: Minor calyx, major calyx, renal pelvis, ureter

8. What is the main blood supply to the kidneys?Renal arteries

9. What is the vein that drains the kidneys?Renal vein

10. What rhythmic movements of smooth muscle propel urine along the length of the ureter?Peristalsis

11. What organ serves as a reservoir for urine?Urinary bladder

12. Label: Internal urethral sphincter, external urethral sphincter, and urethra

13. How long is the female urethra?3-5 centimeters

14. How long is the male urethra?18-20 centimeters long

15. What blood vessel supplies the kidneys with blood?A. Hepatic veinB. Renal ArteryC. Renal VeinD. Superior Vena Cava

16. How many muscular sphincter surround the urethra?A. SixB. TwoC. OneD. None

17. In what part of a kidney do the vessels, nerves, and ureters connect to it?Hilum

18. One kidney is lower then the other which one? Why?Right KidneyThe larger size of the right lobe of the liver

19. Where do the ureters enter the bladder?Posterolateral wall

20. How much cardiac output passes through the kidneys?20-25 %