Gallbladder And Biliary Tree Anatomy Flashcards
(16 cards)
How long is the gallbladder?
7-10cm long
Where does the gallbladder lie?
In the fossa for the gallbladder on the visceral surface of the liver. The fossa lies at the junction of the right and left lobes of the liver.
What is the function of the gallbladder?
Stores bile (can hold up to 50ml of bile)
What completely surrounds its fundus and binds its body and neck to the liver?
Peritoneum
How is the gallbladder attached to the liver?
The hepatic surface of the liver is attached to the liver by connective tissue of the fibrous capsule of the liver.
What are the parts of the gallbladder?
Fundus, body and neck
What does the neck of the bladder join?
The cystic duct.
Where is bile produced?
By the hepatocytes
Describe the drainage of bile from hepatocytes.
Hepatocytes produce bile continuously, secreting it into canaliculi. Canaliculi drain into the small interlobular biliary duct and then into large collecting bile ducts, which in turn merge to form the right and left hepatic ducts.
Describe how the ducts of the biliary tree join up.
Right and left hepatic bile ducts join to form the common hepatic bile duct.
Common hepatic bile duct and cystic duct join to form the common bile duct.
Pancreatic duct joins common bile duct to form ampulla of varter.
Sphincter of oddi is at the ampulla of varter.
What are the consequences of having a stone in the Gall bladder? Cystic duct? Common bile duct? Pancreatic duct?
Gall bladder - asymptomatic
Cystic duct - acute cholecystitis
Common bile duct - biliary obstruction
Pancreatic duct - pancreatitis
Where is the arterial supply of the gallbladder and cystic duct from?
The cystic artery
Where does the cystic artery commonly arise from?
In the triangle between the common hepatic duct, cystic duct, and visceral surface of the liver (called the cystohepatic triangle of Calot)
Describe the arterial branches to get to the cystic artery.
Coeliac trunk -> common hepatic -> right hepatic -> cystic artery
What is the venous drainage from the neck of the bladder and cystic duct?
The cystic veins. These small and usually multiple veins enter the liver directly or drain through the hepatic portal vein.
What is the venous drainage of the fundus and body of the gallbladder?
Venous drainage passes directly into the visceral surface of the liver and drain into the hepatic sinusoids.
