The liver is the largest internal organ. It lies under your right ribs just beneath your right lung. It is shaped like a pyramid and divided into right and left lobes. The lobes are further divided into segments.
Unlike most other organs, the liver gets blood from 2 sources: the hepatic artery supplies the liver with blood rich in oxygen from the heart, and the portal vein brings nutrient-rich blood from the intestines. You cannot live without your liver.
The liver is made up mainly of cells called hepatocytes. It also is made up of other types of cells, including cells that line its blood vessels and cells that line small tubes in the liver called bile ducts. The bile ducts extend out of the liver and carry bile from the liver to the gallbladder or directly to the intestines.