L43_NPB_101 - Lecture 43 SmartSite Lecture 43 Notes...

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Lecture’43’ SmartSite:’ Lecture’43’Notes’ Announcements:’ UCD’Bookstore’Textbook’ Buyback’ Sherwood’$96.50’(7 th ’ ed)’ See’Flyer’next’slide’ Reading’(Recommended):’ Ch’16’(pg.’588-638)’ Gastrointes±nal’System’ Basic’Anatomy’ Structure’&’Func±on’of’ GI’Organs’ 1’
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2’
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GastrointesRnal’(DigesRve)’System’ Primary’funcRon’ Transfer’nutrients,’water,’and’electrolytes’from’ ingested’food’into’body±s’internal’environment’ Four’funcRons’ MoRlity’ SecreRon’ DigesRon’ AbsorpRon’ 3’
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DigesRve’System’ MoRlity’ Muscular’contracRons’that’mix’and’move’forward’the’ contents’of’the’digesRve’tract’ Two’types’of’digesRve’moRlity’ Propulsive’movements’ Push’contents’forward’through’the’digesRve’tract’ Mixing’movements’ Serve’two’funcRons’ » Mixing’food’with’digesRve’juices’promotes’digesRon’of’foods’ » Facilitates’absorpRon’by’exposing’all’parts’of’intesRnal’ contents’to’absorbing’surfaces’of’digesRve’tract’ 4’
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DigesRve’System’ DigesRve’secreRons’ Consist’of’water,’electrolytes,’and’speciFc’organic’ consRtuents’ SecreRons’are’released’into’digesRve’tract’lumen’ on’appropriate’neural’or’hormonal’sRmulaRon’ Normally’reabsorbed’in’one’form’or’another’back’ into’blood’a_er’their’parRcipaRon’in’digesRon’ 5’
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DigesRve’System’
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L43_NPB_101 - Lecture 43 SmartSite Lecture 43 Notes...

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