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chapter 22- gastrointestinal tract

Terms in this set (3)

eight main segments

•mouth, esophagus, stomach, small intestine, large intestine, rectum, anus.

four accessory organs

salivary glands, liver, gallbladder, pancreas.

defenses against a heavy load of microorganisms

-Heavy load of mucus
-Secretory IgA
-Peristalsis keeps microbes moving
-Saliva: lysozyme, lactoferrin
-Stomach: extremely low pH
-Bile is antimicrobial
-GALT

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