Which plane divides each of the four longitudinal sections transversely?

Study liver anatomy and function with our medical students test. Engage with detailed multiple choice questions, each with hints and explanations. Prepare effectively for your test!

In liver anatomy, major vascular landmarks define fixed planes that help describe how the organ is sectioned. The four longitudinal sections run along the liver’s length, and an imaginary plane that passes through the right and left portal veins sits across those sections in a transverse orientation. Because the portal veins are central, paired pathways that divide the liver’s functional halves, this plane provides a consistent cross-sectional divider that intersects each longitudinal section, effectively cutting them transversely.

A real surgical cut isn’t a universal, fixed plane, so its location can vary. The hepatic artery follows a different course and doesn’t create a stable, cross-sectional divider for all four sections. The inferior vena cava is a posterior vessel and doesn’t serve as the transversal plane that slices through each longitudinal section.