RThrough the alimentary canal with gun and camera

RThrough the alimentary canal with gun and camera -...

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    Through the alimentary canal  with gun and camera BIOL 1006 Spring, 2007
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    GI tract Runs from oral cavity to rectum With stops along the way at: Esophagus Stomach Small intestine Large intestine Substantial  variation among the  common domestic species
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    Why such a variety? Diet Carnivore Herbivore Monogastrics Ruminants  Omnivore Avian 
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    Oral cavity Functions: Prehension  Mastication Grinding lubrication Chemical digestion Begins here NB: it should be “palate” 
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    Oral cavity Prehension: grasping  of food Lips Tongue Teeth 
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    Oral cavity
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    Oral cavity Salivary glands Produce saliva Most species have 3 pair: Mandibular Parotid Lingual (sublingual) Saliva contains various active  substances  Amylase: digests starch Lipase: digests fats Bicarbonate: buffers acids in  lower GI tract  Moistens food Begins breakdown 
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    Oral cavity Teeth Carnivores Grasp and tear food Weapons 
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RThrough the alimentary canal with gun and camera -...

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