secretion is inhibited by somatostatin and activated by GHRH

release is stimulated by thyrotropin

release is stimulated by decrease in plasma [calcium]

stimulates corpus luteum to continue secretion of progesterone, maintaining pregnancy

most powerful stimulator of acid secretion in stomach

necessary for adequate B12 absorption, absent in pernicious anemia

converts triglycerides to free fatty acids secreted by chief cell of gut

stimulates acid secretion and mucousal growth factor

inhibits somatostatin in parietal cells, triggered by low pH in dueodenum

HCO3 release from this cell type causes acidic tide in blood

inhibits acid secretion from parietal cell by reducing cAMP levels

release of this neurotransmitter from the vagus nerve on the parietal cell induces acid secretion

induces acinar, centroacinar and pancreatic duct cells to cooperate to increase water and electrolytes in GI lumen

promotes motor activity along GI tract

suppresses motor activity along GI tract

secreted by L cells to inhibit peristaltic reflex and promote segmental contraction

causes contraction of gallbladder to release stored bile

induces open CFTR channels via increased cAMP, lets Cl into intestinal lumen, overproduction from tumor can result in 'pancreatic cholera'