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22 Cards in this Set
- Front
- Back
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What are the functions of the digestive system?
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ingestion
digestion absorption elimination |
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Where does each function occur in the body?
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ingestion-mouth
digestion-mouth, stomach, duodenum absorption- jejunum (small intestine) elimination- |
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Where does mechanical digestion begin?
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mouth
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Where does chemical digestion begin?
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mouth
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Esophagus
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leads to stomach
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cardiac sphincter
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upper end of stomach prevents backflow (heartburn) of acids and digestive enzymes
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stomach
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holds food and drink, starts some of the digestion
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pyloric sphincter
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ring of muscle that can constrict that allows the slow emptying of the stomach
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duodenum
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very 1st part of the small intestine-immediately after stomach (where most of the digestion occurs)
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jejunum
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second portion of the small intestine, absorptions of molecules, breaks lipids into tiny droplets
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ileum
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third section for absorption of nutrient molecules (fats and fat solubles)
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colon
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ascending, transverse, and descending parts (large intestine)
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rectum
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final section of large intestine leads out
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liver
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produces bile that neutralizes stomach acid
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gall bladder
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stores and releases bile into duodenum
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pancreas
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releases digestive enzymes into the duodenum (duct connects pancreas to stomach)
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What are villi? Where are they found and why?
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fold of intestine (small) to increase surface areas for diffusion of molecules
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How do villi differ from microvilli?
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they are on the villi
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Where does most of your digestion occur
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duodenum
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What does bile do?
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neutralizes stomach acid
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Where does of the absorption occur?
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jejunum
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What are some of the primary functions of the liver?
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makes bile
produce blood-clotting factors produces vitamin A and cholesterol filter out and detoxify harmful substances from the blood recieves building block molecules from portal vein |
