GALLBLADDER Flashcards
(41 cards)
Situated in the right hypochondrial region of the abdomen, beneath the liver’s right lobe.
Located at Segment IVB and Segment V of the liver
GALL BLADDER
➢ Pear-shaped
➢ Measures around 7-10 cm in length
➢ Average capacity: 30-50 mL
GALL BLADDER
Function of the gallbladder
Primarily stores bile
Concentrates bile
Releases bile
Hormone released by the duodenum in response to fat)
cholecystokinin
Contains the highest amount of smooth muscle, which is important for its contraction during bile storage and release
FUNDUS of the gallbladder
➢ Location: The body lies in contact with the visceral surface of the liver
➢ Orientation: It is directed upward, backward, and to the left
➢ Function: Acts as the main storage area for bile and contains a lot of elastic tissue, which allows the body to distend when it stores bile.
BODY of the gallbladder
➢ An outpouching between the body and neck of the gallbladder, present in 40-60% of the population
➢ Importance: This pouch is a significant landmark for identifying the cystic duct. If not mobilized, it can be challenging to locate the cystic duct.
➢ Relation: It is bound to D1 (first part of the duodenum) by the right edge of the lesser omentum, specifically the cholecystoduodenal ligament. This ligament needs to be opened to identify the cystic duct.
INFUNDIBULUM (HARTMANN’S POUCH)
lies in the deepest part of the gallbladder fossa and can extend slightly into the hepatoduodenal ligament, which contains the portal triad (portal vein, hepatic artery, common bile duct).
Neck of the gall bladder
These are infoldings in the wall of the cystic duct that help maintain patency. If absent, there can be continuous flow of bile into the gallbladder, potentially leading to bloating or difficulty in transcystic cholangiogram and cauterization.
SPIRAL VALUES OF HEISTER
These are the bile ducts located within the liver. They are situated in the portal canals of the liver where they receive the bile canaliculi. They join with one another to form the larger ducts.
Intrahepatic Ducts/Interlobular Ducts:
These ducts collect bile from the left and right lobes of the liver, respectively, and converge to form the common hepatic duct at the porta hepatis
Left and Right Hepatic Ducts
Function: responsible for transporting bile produced by hepatocytes towards the common hepatic duct
INTRAHEPATIC BILIARY TREE
Intrahepatic billiary tree is composed of?
Intrahepatic Ducts/Interlobular Ducts:
Left and Right Hepatic Ducts:
Transporting bile from the liver and gallbladder to the duodenum.o Regulating bile flow
EXTRAHEPATIC BILIARY TREE
EXTRAHEPATIC BILIARY TREE
Is composed of?
o Common Hepatic Duct
o Cystic Duct
o Common Bile Duct
o Ampulla of Vater
Clamped during Pringle’s maneuver
Supra-duodenal-portion of the common bile duct
Where common bile duct and pancreatic duct unite
Ampula of vater
Used during surgery to control bleeding (maneuver)
Pringle’s maneuver
Opens into the duodenum at the major duodenal papilla along with the bile duct.
Main pancreatic duct of Wirsung
Opens slightly above the main duct at the minor duodenal papilla and often communicates with the main duct.D. RELAT
Minor Duct of Santorini
*A smooth muscle sphincter around the bile duct and pancreatic duct that controls bile and pancreatic enzyme release into the duodenum.
*Maintains the patency of the ampulla of Vater
Sphincter of Oddi
opening of bile and pancreatic duct
Papilla of Vater / Major Papilla
opening for the accessory pancreatic duct
Minor Papilla
The central gateway for structures entering and exiting the liver. It is located on the inferior surface of the liver and serves as a key anatomical landmark, especially in hepatic surgeries.
PORTA HEPATIS (LIVER HILUM)