role of the gallbladder and bile in digestion

MAJOR FUNCTION

!!!!!! STORES AND CONCENTRATES BILE !!!!!

Three regions

Fundus, body and neck

From the liver

right and left hepatic ducts merge to form the common hepatic duct which splits into the cystic duct (leads to gallbladder) and the duodenal ampulla/papilla

Hepatopancreatic sphincter

• CCK triggers release of bile from gallbladder

Storage and ejection of bile

1) the liver secretes bile continuously

2) as it remains in the gallbladder, bile becomes more concentrated

3) release of CCK triggers ejection of bile into the duodenum

4) bile salts break apart lipid droplets by emulsification