GI Hormones

Gastrin
- chief cells: stimulates pepsinogen secretion
- pyloric sphincter: stimulates contraction
- bile secretion: Yes
- GI motility: stimulates motility by increasing amplitude and duration of plateau
Ach
- chief cells: stimulates pepsinongen secretion
- pyloric sphincter: stimulates contraction
- bile secretion: n/a
- GI motility: stimulates strong contraction by increasing amplitude of duration of plateau, increased mixing
secretin
- chief cells: stimulates pepsinogen secretion
- pyloric sphincter: stimulates contraction
- Bile secretion: Yes
- GI motility: stimulates duodenal motility but inhibits antral contractions
CCK (cholecystokinin)
- chief cells: stimulates pepsinogen secretion
- pyloric sphincter: stimulates contraction
- bile secretion: yes
- GI motility: decreases rate of gastric emptying by contraction pyloric sphincter
VIP (vasoactive intestinal peptide)
- chief cells: N/A
- pyloric sphincter: Inhibitory, relaxes sphincter
- bile secretion: yes
- GI motility: inhibits gastric contractions

Author

baseball4life189

53421

Card Set

GI Hormones

Description

GI hormones/fx

Updated

2010-12-05T07:31:48Z

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