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Learn about the function of the Excretory System, its organs, and how they remove metabolic wastes like CO2, urea, and salts from the body. Explore how kidneys, lungs, liver, and skin play a crucial role in excretion.
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EXCRETORY SYSTEM • What is the function of the Excretory System? • to remove metabolic wastes from the body • What is a Metabolic Waste? • A Waste produced by cells during metabolism • What are the Metabolic Wastes? • CO2, H20, heat, urea, salts nitrogen waste
What organs are involved in Excretion? • Kidneys, lungs, liver, and skin • What do the LUNGS excrete? • C02, h20, heat are excreted when you exhale • What are the functions of the Kidney? • 1) filter blood & remove extra water, salt, urea (nitrogen compound), vitamins, minerals, sugar, amino acids • 2) maintain water balance in the blood
What is Urine made of? • H20, urea, salt (& other substances) • How does the Skin excrete wastes? • Sweat glands remove wastes from the blood & you perspire (perspiration = sweating) • What wastes are excreted by the skin? • H20, salts, UREA, - 99% H20
What are the functions of the Liver? • * filters blood and removes nitrogen wastes from extra amino acids and form UREA. • Breaks toxins in blood (drugs and alcohol) • Filters and breaks down your red blood cells
