1. URINARY SYSTEM

2. FUNCTION OF THE URINARY SYSTEM
The main function is to filter waste and extra fluid from the blood

3. Urine
Urine – liquid waste excreted from the body through the process of urination
Urine consists of water and body wastes that contain nitrogen.
If these wastes stay in the body they can become toxic.

4. KIDNEY
Description
Fist sized
Bean-shaped
Located in the lower back

5. KIDNEY
Function
Filters blood
Removes liquid wastes

6. BLADDER
Description
Smooth muscle tissue
Located in the pelvic region

7. BLADDER
Function
Temporary storage for urine

8. URETERS
Description
Tubes that connect kidney to bladder

9. URETERS
Function
Transports urine from kidneys to bladder

10. URETHRA
Description
Tube that connects the bladder to the outside of the body

11. URETHRA
Function
Releases the urine

12. URINARY SYSTEM STRUCTURES

13. RENAL ARTERY Description
Tube that carries the blood away from the heart to the kidney
Arteries = Away from heart

14. RENAL ARTERY
Function
Takes blood to be filtered in kidney

15. RENAL VEIN Description
Tube that carries blood away from the kidneys into the heart
Vein = Into heart

16. RENAL VEIN
Function
Drains the deoxygenated blood from kidney to the heart (Vena Cava)

18. EXCRETION
The process that collects and removes harmful or useless substances from the blood

19. ORGANS OF EXCRETION Kidney – filters liquid waste out of the blood
Liver – detoxifies blood, excretes bile, forms urea
Liver produces urea as a waste product of the digestion of protein
Kidneys transfer urea from the blood to the urine

20. ORGANS OF EXCRETION Lungs – filters carbon dioxide
Skin – filters water to cool the body

21. WASTE PRODUCTS PRODUCED BY THE BODY
Water
Salts
Urea – nitrogen waste that is filtered out of the blood and excreted in the urine
Carbon Dioxide

22. Vena Cava Aorta Adrenal Gland Renal Artery Renal Vein Kidney Ureter
Bladder
Urethra
Urinary
Urine
Salts
Ureter
Urinary Bladder
Urethra

23. DO NOW Objective: Review all the organs and parts that play a role in the Urinary System and the functions for each Identify healthy behaviors and disorders of the Urinary System
Answer the following questions:
What is the main function of the Urinary system?
What acts as a temporary storage for urine?
What is the function of the renal artery?
What is tube that connects the bladder to the outside of the body?
What waste products make up your urine?

24. Healthy Behaviors & Problems of the Urinary System
Health behaviors for good urinary health:
Drink enough water  at least 8 oz. of H20
Eat a balanced diet
Practice good hygiene
Have regular checkups

25. Problems of the Urinary System
Cystitis – inflammation of the bladder, caused by a bacterial infection
Signs/Symptoms include:
Burning during urination
Frequent urination
Fever
Blood in urine
Treatment: antibiotics

27. Problems continued Treatment: antibiotics
Urethritis – inflammation of the urethra caused by a bacterial infection
Signs/Symptoms include:
Burning during urination
Frequent urination
Fever
Blood in urine
Treatment: antibiotics

28. Problems with the kidneys
Kidney Stones – form when salts in the urine crystalize into a solid stone, usually containing some calcium.
Smaller stones can pass regularly
Bigger stones need treatment
Treatment:
Sound waves
Laser surgery
Medications
Kidney transplant

30. Problems continued
Kidney failure – kidneys progressively lose their ability to function
Caused by:
Decreased blood supply to the kidneys
Infection/Inflammation of the kidneys
Kidney stones

31. Kidney Failure continued
Signs/Symptoms include:
Weakness
Shortness of breath
Inability to clear waste products from body
Treatments include:
Dialysis
A process for removing waste and excess water from the blood
Used primarily as an artificial replacement for lost kidney function
Kidney transplant

32. DID YOU KNOW?
The Urinary System filters about 50 gallons of blood and produces 1-2 quarts of urine per day

33. 1 2 3 4

34. REVIEW What is the function of the kidney?
What are the Ureters responsible for?
What is the Urethra responsible for?
What is the difference between the renal artery and the renal vein?
What is excretion? What organs excrete wastes?
What is the difference between cystitis and urethritis?
How can kidney stones be treated?
What is dialysis?