Biliary System Flashcards
Parts of the biliary tract
- Gallbladder
- Bile ducts
- Intrahepatic ducts
- Right/left hepatic ducts
- Common hepatic duct
- Cystic duct
- Common bile duct
- Pancreatic ducts
Area located along the posterior and inferior portion of the RLL
GB fossa
Appearance of normal gallbladder
Partially filled balloon or pear-shaped
3 parts of the gallbladder
Neck - the tapered portion that leads to the ductal system
Body - Mid portion of the GB
Fundus - rounded bottom of the pouch
Normal length of GB
7 - 10 cm length
3 - 4 cm width
Walls should be < 3 mm
In order to scan the GB how long should patients be NPO?
6 - 8 hours
Which vessel supplies the gallbladder and liver
Proper hepatic artery
Cystic artery originates directly from the..
Common hepatic artery
rarely from the gastroduodenal artery
Venous drainage of the GB is by way of the ..
Hepatic portal system
_______ is located in the duodenum, regulates the passage of bile into the duodenum and, at the same time, prevents reflux of the gastrointestinal fluids into the biliary system
Sphincter of Oddi
Bile is produced by the..
Liver
Bile is composed of..
82% of water
12% of bile acids
remainder includes cholesterol, bilirubin, proteins, electrolytes, and mucus
Bile in the gallbladder vs. in the liver
More concentrated (In GB)
The duodenal mucosa releases cholecystokinin when..
fats and amino acids are ingested
Congenital Anomalies
- Bilobed
- Duplicated
- Septated or folded (normal variant)
- Phrygian cap (fundus)
- Hartmann’s pouch (infundibulum at neck)
- Junctional fold (neck or body
Bile from liver reached GB through the..
hepatic and cystic ducts
Left and right hepatic ducts are..
Intrahepatic (enclosed by liver tissue)
Cystic duct connect the ____ to the ____
Gallbladder to the CHD
Bile must pass through the ______ to reach the GB
Cystic duct
Cystic duct normal length..
4 cm length
3 cm diameter
The spiral valves of Heister
prevents duct from over distending or collapsing; can mimic gravel.
CBD appears like a ______
Mickey mouse
due to the CBD being lateral and anterior to MPV (HA is medial and anterior)
CBD normal length..
8 - 11 cm length
no more than 6 mm diameter
CBD diameter post-cholecystectomy
up to 10 mm
Reason for u/s exam of biliary system
- RUQ pain
- Nausea
- Vomiting
- Positive Murphy’s sign
- Pain radiating to the right shoulder
- Jaundice
- loss of appetite
- Intolerance to fatty foods or dairy
GB possible complications
- GB and adjacent liver masses
- Cholelithiasis (gallstones)
- Possible obstruction of biliary system
- Choledocholithiasis (stone in ductal system)
- Cholecystitis (Inflammation of GB)
Cholelithiasis
gallstones
Choledocholithiasis
stone in ductal system
Cholecystitis
Inflammation of GB
