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Digestive system
| Question | Answer |
|---|---|
| Degluttion | process of Swallowing, mouth, nasopharyngeal and larynx must be blocked |
| peristalsis | wavelike ripple produces movement of matter, regulated by stretch receptors, stimulated by CCK |
| segmentation | mixing movement , forward back moment , facilitates aborption |
| chyme | food mixed with gastric juices , ejected into duodenum every 20 seconds |
| Intestinal motility | peristalsis and segmentation |
| cephalic phase gastric secretion | psychic phase |
| gastric phase | proteins reach pyloric, stimulates gastric -stimulates gastric juices |
| CCK ( Cholecystokinin) | increases exocrine section from pancreas, oppose gastrin, stimulates gallbladder contraction (ejects bile into douodenum) |
| protease | pepsin, digest proteins |
| Three stages of degluttion | Oral, pharyngeal, esophageal |
| fucntional roles of gastric juices | digestion of food |