lecture 8 Flashcards
Gallbladder
Located on posterior surface of liver
Stores & concentrates bile
The gallbladder releases bile when necessary via
cystic duct
Pancreas
Retroperitoneal organ at posterior of abdomen
Both endocrine & exocrine gland
Head is nestled into C-shaped duodenum
Pancreatic acini
- secrete digestive enzymes
- Released via pancreatic & accessory ducts
Biliary System
Vessels that carry secretions of pancreas & bile from liver & gallbladder
Right & left hepatic ducts of liver carry bile
Unite to form common hepatic duct
Common hepatic duct merges with cystic duct to form common bile duct
Common bile duct unites with pancreatic duct to form hepatopancreatic ampulla
Release of bile and digestion enzymes occurs at major duodenal papilla
Pancreatic juice
—composed of water, sodium bicarbonate, digestive enzymes
Sodium bicarbonate buffers chyme
Protein-digesting enzymes
produced in inactive form to prevent self-digestion
Activated by acidity of chyme in duodenum
Pancreatic secretion stimulated by:
Secretin
Cholecystokinin (CCK)