4
Gastrointestinal Hormones
Illustrative Gastrointestinal Hormones and Function
Where
Secreted Gastrointestinal Hormone
Effect of
Hormone on
Eating Behavior
Stomach
Ghrelin (secreted by P/D1 cells)
Hunger
Gastrin (secreted by G cells in
antrum)
Hunger
Pancreas Insulin (secreted by pancreatic beta
cells)
Hunger
Glucagon (secreted by pancreatic
alpha cells)
Hunger
PP [secreted by PP (F) cells]
Hunger
Amylin
(secreted by pancreatic beta cells)
Hunger
Somatostatin (secreted by D cells
pylori antrum, duodenum, and
pancreatic islets)
Hunger
Small
Intestine
(Mainly
Duodenum
and Jejunum)
CCK (secreted by I-cells)
Hunger
Secretin (secreted by S cells)
—
GIP; Also known as Gastric Inhibitory
Peptide – secreted by K cells
—
Motilin (secreted by M or Mo cells)
Hunger
