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Definition
| the main part of the digestive tract |
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Definition
| major organ effecting our hunger sensation |
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Definition
| type of food with highest satiety value |
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Definition
| response in your head before you even eat something, resulting from external clues such as sight and smell |
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Definition
| contains saliva, salivary amylase, and teeth. all break down food |
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Definition
| enzyme which begins the digestion of carbs. can also break down long chains of starch |
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Term
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Definition
| after food is chewed and moistened, it is moved here. this is a funnel-shaped opening that connects the nasal passages and mouth to the respiratory passages and esophagus. it is a common passageway for food and air and is responsible for swallowing. |
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Term
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Definition
| a portion of the GI tract that extends from the pharynx to the stomach. food bolus is moved here by peristalsis. when materials move from the stomach back into this area, it causes "heartburn" |
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Term
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Definition
| coordinated muscular contractions which move food through the GI tract. vomiting is a reverse wave of this. |
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Term
| gastroesophageal sphincter |
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Definition
| sphincter between the stomach and esophagus. when muscle contracts, this sphincter is closed. normally prevents food from moving back out of the stomach. |
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Term
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Definition
| food is mixed with highly acidic secretions here to form chyme. some digestion takes place here. |
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Term
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Definition
| places where signals are released to inhibit or stimulate gastric secretion. |
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Term
| 3 phases of gastric secretion |
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Definition
| cephalic, gastric, intestinal |
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Term
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Definition
| begins when food enters the stomach. this causes gastric secretion by stretching local nerves and signaling the brain to stimulate the secretion of gastrin. gastrin is a hormone which triggers the release of gastric juice. |
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Term
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Definition
| begins when chyme enters the SI and triggers events that decrease stomach motility and secretions and slow the release of food into the intestine. this phase makes sure that the amount of chyme entering the SI does not exceed the intestine's ability to process it. |
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Term
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Definition
| main site of digestion and absorption. contains 12 inches of duodenum, 8 feet of jejunum, and 11 feet of ilium. |
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Term
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Definition
| secretes pancreatic juice, which contains bicarbonate ions and other enzymes. the bicarbonate ions neutralize the solution in the SI, and the amylase breaks the starch into sugar. |
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Term
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Definition
| protein enzymes secreted by the pancreas that break protein into AA. |
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