Find a Doctor
Browse UPMC doctors and medical professionals to find the care that's right for you. Customize your search by specialty, zip code, last name, and more.
Visit the UPMC Find a Doctor website.
The liver is the largest and perhaps the most complex organ in the body.
Your liver is made up of two main lobes, or sections, but that's just the beginning. There are many parts, all working together, that allow your liver to perform more than 300 functions.
The liver has two lobes — the right and the left.
The lobules are connected to small bile ducts that connect with larger ducts to ultimately form the hepatic duct.
The hepatic duct transports bile, produced by the liver cells, to the gallbladder and duodenum (the first part of the small intestine).
The gallbladder, a separate organ that works closely with the liver, is attached to the bile duct. Although it's small, the gallbladder is distensible, which means it's able to stretch out (or distend) if necessary.
The gallbladder stores bile and releases it back into the duct on cues from the stomach.
At any given moment, the liver holds about 13 percent of the body's blood supply.
Your liver gets blood from two distinct sources: the portal vein and the hepatic artery.
This is how the sinusoids get all that nutrient- and oxygen-rich blood.
The inferior vena cava is a large main vein that carries blood through the liver and back to the heart.
Below the right lobe of the liver lies the gallbladder — a hollow, pear-shaped, saclike organ.
The gallbladder stores bile, a greenish brown fluid produced by the liver to help the body break down and use fats. When a person eats, the gallbladder empties bile into the intestines to help digest food.
The pancreas, located below the liver and gallbladder: