Next Review Session is: @ :15 Date: June, 2017- period 1 Aim # 84: What are the structures and functions of the human excretory system? HW: Test Friday 6/2 (Regents MC!) RRB pages 31-44 due Friday Castle Learning (QUIZ #5) due next MONDAY Do Now: Next Review Session is: @ :15

1. Major Metabolic Wastes CO2 Water Mineral Salts build up during metabolism Nitrogen compounds ammonia, urea, uric acid breakdown of amino acids

2. Human Excretion Wastes: Organs Involved: CO2 water urea mineral salts Organs Involved: lungs skin liver urinary system

3. Lungs remove CO2 & water

4. Skin Protection keeps body from drying out removal of excess heat blood flow through skin’s capillaries Excretion of sweat water salts urea

5. Liver removes worn out RBCs & excess amino acids, makes urea

6. Urinary System Kidneys Ureter Bladder Urethra functional unit = nephron each Kidney has 1.25 million nephrons! Ureter Bladder Urethra

7. Kidney Function Filters the blood Removes metabolic wastes and forms Urine water, salt, urea (nitrogenous waste) Control water balance Controls the concentration of various substances in the blood

8. MALFUNCTIONS OF THE EXCRETORY SYSTEM Dialysis Machine: used to filter blood when kidneys aren’t functioning properly

9. NEPHRITIS nephrons not working inflammation of the kidney Caused by bacterial infection treat with antibiotics can last a long time and cause kidney failure

10. KIDNEY STONES mineral calcium builds up in kidney Caused by improper diet treat with surgery or shock waves

11. Gout high levels of uric acid (solid nitrogenous waste) in blood usually in men pain in joints, big toe and ankle bone caused by crystals of uric acid treat with lots of water, special diet and medication

12. LIVER DISEASE too much alcohol fats accumulate in liver and scars cells cirrhosis liver shuts down and homeostasis can’t be maintained

13. HEPATITIS B caused by a virus inflammation of the liver can cause cirrhosis and liver failure can be fatal

Let’s Review: Label the diagram below: Why is excretion important? Name and describe a disease that can affect your excretory system.