6 Questions
Which blood vessel delivers approximately 25% of the blood supply to the liver?
Hepatic artery
Which blood vessel delivers approximately 75% of the blood supply to the liver?
Portal vein
What is the most common hepatic arterial variant?
Accessory right hepatic artery
Which structure lies anteriorly in the hepatoduodenal ligament to the left of the common bile duct?
Hepatic artery proper
In how many cases does the right hepatic artery pass deep and posterior to the common bile duct?
88%
What is the usual origin of the cystic artery feeding the gallbladder?
Right hepatic artery
Study Notes
Blood Supply to the Liver
- The hepatic portal vein delivers approximately 75% of the blood supply to the liver.
- The hepatic artery delivers approximately 25% of the blood supply to the liver.
Hepatic Arterial Variants
- The most common hepatic arterial variant is the right hepatic artery arising from the superior mesenteric artery.
Structures in the Hepatoduodenal Ligament
- The hepatic artery lies anteriorly in the hepatoduodenal ligament to the left of the common bile duct.
Right Hepatic Artery and Common Bile Duct
- In approximately 80% of cases, the right hepatic artery passes anteriorly and to the right of the common bile duct.
- In 20% of cases, the right hepatic artery passes deep and posterior to the common bile duct.
Cystic Artery Origin
- The cystic artery, which feeds the gallbladder, usually arises from the right hepatic artery.
Test your knowledge about the dual blood supply of the liver and its arteries with this quiz. Learn about the hepatic artery, portal vein, and their contributions to liver function.
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