Term
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Definition
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Term
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Definition
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Term
| digestive enzyme used in mouth? |
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Definition
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Definition
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Definition
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| digestive enzyme in stomach? |
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Definition
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| digested in small intestine? |
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Definition
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Term
| digested in large intestine? |
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Definition
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Term
| gastrointestinal tract is aka |
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Definition
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Term
| accessory organs of the digestive system? |
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Definition
| salivary glands, tongue, teeth, liver, pancreas, gall bladder |
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Term
| salivary amylase splits starch into.... |
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Definition
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Term
| parasympathetic stimulation of salivation |
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Definition
| extrinsic salivary glands produce saliva rich in enzymes |
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Term
| sympathetic stimulation of salivary glands |
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Definition
| produce less abundant, thicker saliva with more mucous |
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Term
| T or F: bucal stage of swallowing is involuntary |
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Definition
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Term
| buccal phase of swallowing |
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Definition
| tongue pushes back into oropharynx |
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Term
| pharyngeal esophageal phase of swallowing |
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Definition
| soft palate rises blocking nasopharynx,epiglottis folds back, pharyngeal constrictors push bolus down, lower esophageal sphicter relaxes to let food pass into stomach |
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Term
| what do gastric secretions consist of? |
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Definition
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Term
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Definition
| activates enzymes and destroys ingested bacteria and pathogens |
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Term
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Definition
| secreted as pepsinogen, converted to pepsin by hcl and pepsin activates more pepsinogen |
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Term
| cephalic phase of gastric function |
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Definition
| vagus nerve stimulates gastric secretion and motility at sight/smell/thought of food |
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Term
| gastric phase of gastric function |
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Definition
| presence of food or semidigested protein activates vagus nerve stimulated by stretch to release histamine and gastrin hormones |
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Term
| histamine and gastrin hormones released during gastric phase of the regulation of gastric function stimulate... |
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Definition
| output of gastric juice in stomach to facilitate digestion |
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Term
| intestinal phase of gastric function |
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Definition
| stimulated by low pH and partially digested food in duodenum |
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Term
| intestinal phase of gastric function initiates... |
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Definition
| enterogastric reflex casued by acid and semi digested fats, hormone secretion |
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Term
| what does chyme in the duodenum stimulate? |
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Definition
| stimulates duodenal cells to release secretin, cholecystokinin and gastric inhibitory peptide |
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Term
| secretin, cholecystokinin and gastric inhibitory peptide all... |
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Definition
| suppress gastric secretion and mobility so that pH in small intestine doesnt change from the gastric secretions coming from stomach, keeps intestine alkaline |
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Term
| where does the majority of digestion take place? |
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Definition
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Term
| pancreatic enzymes that digest proteins? |
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Definition
| trypsin, chymotrypsin, and peptidases |
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Term
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Definition
| relased from duodenum in response to arrival of acid and fat. causes contraction of gallbladder,secretion of pancreatic enzymes and relaxation of hepatopancreatic sphincter |
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Term
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Definition
| released from duodenum in response to chyme stimulates ducts to secrete more |
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Term
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Definition
| from stomach, weakly stimulates gallbladder contraction and pancreatic enzyme |
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Term
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Definition
| monosaccharides glucose and galactose liberated by the breakdown of starch and disaccharides are transported in blood |
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Term
| protein absorption in s.i |
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Definition
| aa from protein digestion are actively transported. di and tripeptides are 1st broken down to aa with the epi cells |
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Term
| lipid absorption in the s.i |
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Definition
| fatty acids and monoglycerides form micelles that then diffuse into epi cells recombine with protein and are carried as lipoproteins in lymph |
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Term
| what enzymes are secreted in large intestine? |
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Definition
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Term
| flatulence is caused by.... |
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Definition
| bacteria in large intestine fermenting any remaining carbs and releasing gas |
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Term
| bilirubin is broken down in the... |
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Definition
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Term
| transit time in the large intestine is.... |
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Definition
| 12-24 hours (h2o is reabsorbed) |
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Term
| what does feces consist of? |
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Definition
| water, bacteria, mucous, undigested fiber, fat and sloughed epithelial tissue |
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Term
| contraction is large intestine are called? |
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Definition
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Term
| what reflexes trigger bowel movements? |
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Definition
| gastrocolic and duodenocolic |
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