Digestive System 101

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    responsible forreceiving food

    breaking itdown tonutrients

    Absorbing thenutrients into the

    bloodstream

    eliminating indigestibleparts of the food from the

    body

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    FEEDING

    -the process by which organismsobtain their food.

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    Feeding on Particulate Matter

    Feeding on Food Masses Feeding on Fluids

    FEEDING ME!"NI#M#

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    #uspension-feeding"nimals use ciliated surfaces

    to produce currents that drawdrifting food particles into theirmouths.

    a. $lter-feeding

    -animals $lter their foodwhen feeding.

    Feeding on

    Particulate Matter

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    Deposit-feeding

    -feed on disintegrated organicmaterial %detritus&.

    Feeding on

    Particulate Matter

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    "nimals must locate'

    capture' hold and swallowtheir prey.

    Feeding on

    Food Masses

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    "nimals that feed on (uids.

    Feeding on

    Fluids

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    with one opening or an alimentary canal witha true mouth and anus.

    the gastrovascular cavity has cells lining it

    that secrete digestive enzymes to break downthe food particles through a process calledintracellular digestion.

    The alimentary canal is a long tube thatbegins with a mouth, then goes to the

    esophagus, then to the crop, gizzard,intestine, and nally, to an anus; this is usedin the process of etracellular digestion.

    In)ertebrate Digesti)e

    #ystem

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    Monogastric* #ingle-chamberedstomach

    ")ian

    +uminants

    ,ertebrate Digesti)e

    #ystem

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    Avian !igestive "ystem

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    #uminant $ammal !igestive "ystem

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