What is the function of the ligamentum teres?

The ligamentum teres, also known as the round ligament of the liver, is a fibrous remnant of the obliterated umbilical vein. While it does have some relation to the anatomy of the liver, its primary function is to serve as a landmark that divides the left lobe of the liver into medial and lateral segments. This division is important for understanding the liver's anatomy and for surgical approaches, as the segmentation can influence surgical planning and the assessment of liver disease.

The correct answer emphasizes the significance of the ligamentum teres in anatomical orientation within the liver. It helps define the boundaries for various segments, ensuring clear communication when discussing liver structure and providing guidance for interventions, imaging, and pathology assessments. This segmentation is crucial in the clinical setting, particularly when considering procedures like liver resections or transplants.