Topic: Excretory System Aim: Describe parts & functions of the Excretory System.

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Presentation transcript:

Topic: Excretory System Aim: Describe parts & functions of the Excretory System.

Function Removal of metabolic (cellular) wastes from the body

Metabolic wastes: –CO 2, H 2 0, salt, nitrogenous wastes (urea)

PARTS OF THE EXCRETORY SYSTEM

Lungs Excrete CO 2 & H 2 O vapor CO 2 & H 2 0 vapor

Skin Excrete urea, salt & water in sweat (perspiration)

Temperature regulation –Evaporation of sweat from skin cools body Maindex

Liver Produces UREA –Released into blood and then moves to kidneys

Detoxification = waste products, toxins, and drugs removed from the blood

Kidneys a. Filter wastes from blood

b. Maintains water balance in body c. Produces urine

Did you know… About 440 gallons of blood flow through the kidneys each and every day! If you eat a lot of red beets, your urine will actually be colored red. The average person passes 9,202 gallons of urine in his/her lifetime. That’s enough to fill 315 bathtubs.

Urinary System

Kidneys Blood filtered Urine produced

Ureters Transport urine from kidneys to bladder

Urinary Bladder Muscular organ that stores urine

Urethra Tube that leads urine out of the body

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