Canberra time zone AEST - Australian Eastern Standard Time AEDT - Australian Eastern Daylight Savings Time when daylight saving time is being observed (from January, 1 to early April, from early October to the end of the year)
Secretin, the digestive hormone that stimulate pancreatic secretion, also increases bile secretion. Its main effect, however, is to increase the secretion of water and sodium bicarbonate from the lining of the bile duct.
When fat globules arrive in the upper reaches of the small intestine, the duodenum, it triggers a hormone. The hormone tells the gallbladder that bile is needed, so the gallbladder does a muscular contraction and dumps a large quantity of bile into the duodenum to deal with the fat.