Chapter 3, Lesson 5 - The Excretory System · What does the excretory system do? How does your body...
Transcript of Chapter 3, Lesson 5 - The Excretory System · What does the excretory system do? How does your body...
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Lesson 5 –The Excretory
System
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It gets rid of wastes:solid waste from digestion(through the large intestine)
carbon dioxide from cells(through the lungs)
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It gets rid of wastes:liquid waste from cells(through the kidneys, whichfilter wastes out of the bloodand then produce urine)
sweat (through the skin)
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Blood passes through thekidneys 60 times a day.The kidneys remove substancesthe body no longer needs andreturns substances it does need.Nephron – part of the kidneywhere wastes are separatedfrom useful materials
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Wastes can build up todangerous levels.People with this problem needdialysis, a treatment where amachine does the job of thekidneys.
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Through the urinary system:Urine is released from thebody.
Through the skin:Sweat is released through tinyopenings in the skin calledpores.
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