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Digestionn
AP
| Question | Answer |
|---|---|
| Negative feedback on stomach secretion and motility as acid chyme reaches the duodenum results from the secretion into the bloodstream of: | GIP |
| The _____ stimulates gastric secretion during the cephalic phase and as a result of physical contact in the stomach. | Vagus nerve |
| Which of the following is/are true sphincters: | pyloric sphincter leocecal sphincter |
| Three distinct layers of smooth muscle are found in the: | stomach |
| The area of most abundant true goblet cells is: | colon |
| Absorption of digestive endproducts occurs mostly in the: | small intestine |
| The lining of the esophagus is: | Stratified squamous epithelim |
| The _____ has Brunner's glands which secrete an acid-neutralizing mucus. | duodenum |
| Movement of materials within the colon is due principally to: | mass peristalsis |
| Peyer's patches are lymph nodules found mostly in the: | ileum |
| Pepsinogen is secreted by: | Chief cells located only in the stomach. |
| Which of the following inhibits stomach secretion and motility while simultaneously stimulating bile release, pancreatic enzyme release, and relaxation of the sphincter of Oddi. | CCK |
| Because it has no goblet cells, the esophagus must rely on: | Seromucous glands located in the esophageal submucosa. |
| Absorption of water occurs mostly in the: | small intestine |
| In the hierarchy of enzyme function _____ must act before _____ can act. | trypsin, aminopeptidase |
| Which of the following is a brush border enzyme? | maltase |
| Without _____ the enzyme lipase could not function effectively. | bile |
| In order to produce H+ in the stomach _____ is sent to the bloodstream and _____ is sent into the stomach. | HCO3- and Cl- |
| Amino acids are absorbed into mucosal cells principally by: | active co-transport |
| Three distinct bands of longitudinal smooth muscle are found in the: | colon |
| If you see villi and goblet cells you are looking at the: | Small intestine |
| The upper third of the esophagus has: | Skeletal muscle only. |
| Positive feedback on stomach secretion and motility as acid chyme reaches the pylorus results from the secretion into the bloodstream of: | gastrin |
| ____ is/are responsible for emulsifying fats. | bile salts |
| The pyloric sphincter is forcefully constricted and other stomach muscle inhibited by: | enterogastric reflex |
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