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Chapter_44_to_post - Chapter 44 The Urinary System...

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Chapter 44 The Urinary System The excretory system restores and maintains the proper internal amount minerals, water, sugar, protein, fat, etc. in the body despite differences in diet Digestive system is unselective
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Functions of excretory systems: All performed simultaneously as blood is selectively filtered by kidneys; water and nutrients returned to blood
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Functions of excretory systems 1. excretion of cellular waste products
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Functions of excretory systems 1. excretion of cellular waste products urea 2. regulation of fluid composition (ions, water, nutrients)
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Functions of excretory systems 1. excretion of cellular waste products urea 1. regulation of fluid composition 3. secretion of hormones
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Vertebrate excretory system kidney (filter)
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Fig 44.14
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Vertebrate excretory system (renal system) kidney ureters (tubes off kidney)
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Fig 44.14
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Vertebrate excretory system kidney ureters bladder (hollow and muscular, storage of urine)
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Vertebrate excretory system kidney ureters bladder urethra (urine exits)
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Vertebrate excretory system kidney ureters bladder urethra bladder: responsible for retention of urine
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