GI Flashcards
(20 cards)
What inhibits gastrin?
Somatostatin and low stomach pH
What causes secretion of bicarbonate ions from the pancreas ?
CCK
What percent of cells in the GI tract secrete hormones ?
1%
What cells secrete CCk?
I cells
What inhibits gastric emptying ?
CCK
What causes secretion of pancreatic enzymes ?
Cck
What is a gastrin secretion tumor “gastronoma”
Zollinger ellison syndrome
Gastrin is secreted in response to what/
Eating a meal
What causes contraction of the gallbladder?
CCK
What coordinates and promotes fat digestion and absorption ?
CCK
What also stimulates contraction of the Gallbladder like CCK?
Motilin
What’s major effect is stimulation of insulin
GIP
What inhibits the effect of gastrin on parietal cells?
Secretin
What is secreted by K cells?
GIP
What is secreted in response to glucose, aa. And fatty acids?
GIP
What activates pepsinogen?
Gastrin
What hormone promotes hydrogen secretion by partial cells which lowers stomach pH?
Gastrin
What increases gastric acid secretion, motility and emptying?
Ghrelin
Does GIP inhibit gastric secretion in humans”?
No
What inhibits pancreatic secretion of bicarbonate?
Pancreatic polypeptide
