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Published byJasper Bell Modified over 9 years ago
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Topic: Excretory System Aim: Describe parts & functions of the Excretory System.
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http://www.youtube.com/watch?v=CL78yNLlLmo
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Function Removal of metabolic (cellular) wastes from the body
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Metabolic wastes: –CO 2, H 2 0, salt, nitrogenous wastes (urea)
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PARTS OF THE EXCRETORY SYSTEM
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Lungs Excrete CO 2 & H 2 O vapor CO 2 & H 2 0 vapor
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Skin Excrete urea, salt & water in sweat (perspiration)
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Temperature regulation –Evaporation of sweat from skin cools body Maindex
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Liver Produces UREA –Released into blood and then moves to kidneys
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Detoxification = waste products, toxins, and drugs removed from the blood
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Kidneys a. Filter wastes from blood
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b. Maintains water balance in body c. Produces urine
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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.
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Urinary System
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Kidneys Blood filtered Urine produced
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Ureters Transport urine from kidneys to bladder
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Urinary Bladder http://www.youtube.com/watch?v=uAy5C2YYlbk Muscular organ that stores urine
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Urethra Tube that leads urine out of the body
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