Digestive System 101
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Transcript of 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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