cells diagram (lect 7)

Question 1

S cells

Answer 1

stimulus: acid entering small intestine

substance released: secretin

targets: pancreas duct cells, choliangiocytes, g-cells, ecl-cells, parietal cells

physiological response:
- bicarbonate secretion from pancreas duct cells
- bile production in the liver
- inhibits gastric acid secretion and motility

Question 2

I cells

Answer 2

stimulus: fatty acid and amino acids

substance released: CCK

targets: pancrease acini, gallbladder, sphincter of oddi

physiological response:
- digestive enzyme secretion
- bile secretion
- inhibit gastric acid secretion and gastric motility

Question 3

K cells

Answer 3

stimulus: carbs in the small intestine

substance released: GIP

targets: stomach, beta islets in pancreas

physiological response:
- stimulate insulin secretion
- inhibits gastric acid secretion and motility

Question 4

L cells

Answer 4

stimulus: carbs in the small intestine

substance released: GLP-1

targets: stomach, beta islets in pancreas

physiological response:
- stimulate insulin secretion
- inhibits gastric acid secretion and motility

Question 5

Mo Cells

Answer 5

stimulus: possibly alkaline lumen

substance released: motilin

targets: smooth muscle

physiological response:
- migrating motor complex