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3.3 The Excretory System “lets make urine!”

3.3 The Excretory System “lets make urine!”. Text pages 72 - 74. Vocabulary Words. Excretion Nephrons Urine Kidney Ureter Urethra bladder. Excretion. Excretion = the process of removing waste CO 2 = respiratory system Solid waste= digestive system

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3.3 The Excretory System “lets make urine!”

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  1. 3.3The Excretory System“lets make urine!” Text pages 72 - 74

  2. Vocabulary Words • Excretion • Nephrons • Urine • Kidney • Ureter • Urethra • bladder

  3. Excretion • Excretion = the process of removing waste • CO2 = respiratory system • Solid waste= digestive system • Wastes dissolved in water = excretory system

  4. How the Excretory System works… • Cells waste diffuses into blood stream • Liver waste (urea) dissolves in blood stream • All blood passes through kidneys (1 L/min) • Tiny tubes in kidneys, called nephrons, collect waste from blood vessels (filters) • Waste gets collected into the ureters • Ureter carries waste to bladder= urine • Urine exits body through the urethra

  5. Water regulation • Kidney also regulates water balance in our body • http://kidshealth.org/kid/htbw/_bfs_USquizsource.html

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