Gallbladder/Biliary Tree Flashcards
Function of GB
Concentrate & store bile
Identifying landmarks of GB
Right PV & Main lobar Fissure
Anatomy of GB
Neck, Body, Fundus
Normal size of GB wall
3 mm
GB Volume Equation
(L * W * H) .52
Cystic Duct connects
GB Neck to Common Hepatic Duct
First/last to dilate if CBD is backed up
Gallbladder is first, CBD is last
Flow of bile
Liver → R/L Hepatic Ducts → Common Hepatic Duct → Cystic Duct → Gallbladder → Common Bile Duct → Pancreatic Duct → Ampulla of Vater → Sphincter of Oddi → Duodenum
Intrahepatic Dilation
Dilation which pushes bile back into liver; occurs at CHD, LHD, RHD
Extrahepatic Dilation
Pushes bile away from liver; blockage after cystic duct
Spiral Valves of Heister
Connect gallbladder neck to cystic duct; control inward/outward flow of bile
Anatomy of Ampula of Vater (aka)
Hepatopancreatic Ampulla; Consists of duodenal papilla & Sphincter of Oddi
Sphincter of Oddi
Controls flow of bile & pancreatic juices into duodenum
Cholecystokinin (CCK)
Controls the flow of bile
Vessels from Posterior → Anterior
IVC, Portal Vein, Hepatic Artery, Bile Duct
Bile
Breaks down fat & RBC; made up of bile salts cholesterol, bilirubin
Bilirubin
Pigment formed from breakdown of RBC, associated w/ jaundice
Avg size of bile duct
< 5 mm
Avg size of bile duct after cholecystectomy
10 mm or 1 cm
Direct Bilirubin
Bilirubin prevented from going into liver by an obstruction
Indirect Bilirubin
Loss of bilirubin due to hepatic damage; problem in the process of making bilirubin
Lab Values Associated w/ GB
Bilirubin, alkaline phosphatase, lactic dehydrogenase
Phygian Cap
Fold between the body and fundus
Junctional Fold
aka Hartman Pouch; fold between body & neck of GB
GB Variants
Phygian cap, junctional fold, septation, agenesis, duplication