1. Kidneys, Ureters, Urinary Bladder, Urethra, and Lungs
The Excretory System
Kidneys, Ureters, Urinary Bladder, Urethra, and Lungs

2. Lungs Remove excess Carbon Dioxide from the blood by exhaling
Also removes water vapor
Breathing maintains homeostasis
Keeps Oxygen and Carbon Dioxide in balance

3. Skin Sweat glands release excess water and salts
Cools body to maintain internal temperature

4. Kidneys Remove wastes from blood Regulate water in blood
Maintain pH of blood

5. Kidneys
Filtration
Reabsorbtion
Excretion

6. Kidneys
Made up of Nephrons
Individual filtering unit

7. Filtration Blood enters Kidney through Renal Artery
Blood travels into capillaries in the nephron
Salts, water, glucose, amino acids and waste diffuse out of the capillaries
Blood cells stay in the capillaries

8. Reabsorbtion
Materials the body needs are reabsorbed into the blood stream
Glucose, amino acids, vitamins, water
Water is reabsorbed based on the needs of the body

9. Excretion Liquid and wastes not reabsorbed form urine
The urinary system eliminates wastes and water from the body

10. Urinary System
Made up of the kidneys, ureter, urinary bladder, and urethra.
Urine travels from Kidneys to the Urinary Bladder through the ureters.
Urine passes out of the Urinary Bladder through the Urethra and out of the body.

11. Urinary System

12. Questions
What is the order of the pathway through which urine is excreted?
The unit of the kidney that filters the blood of excess waste products and water is the---