How many lobes does the liver have?

The liver is primarily divided into two main lobes: the right lobe and the left lobe. However, when considering its functional anatomy, the liver is often referenced as having a total of four lobes, which includes the right lobe, left lobe, quadrate lobe, and caudate lobe. The quadrate and caudate lobes are considered subdivisions of the larger right lobe.

This segmentation is particularly significant in the context of liver surgeries and imaging studies, as each lobe has its own vascular and biliary supply. Understanding this anatomical division helps in assessing liver function, pathology, and surgical planning.