Skip to main content

Unfortunately we don't fully support your browser. If you have the option to, please upgrade to a newer version or use Mozilla Firefox, Microsoft Edge, Google Chrome, or Safari 14 or newer. If you are unable to, and need support, please send us your feedback.

Publish with us
Medial Segmental Artery of Liver
Cardiovascular System

Medial Segmental Artery of Liver

Arteria segmenti medialis hepatis

Read more

Quick Facts

Origin: Left hepatic artery.

Course: Passes to the right as far as the umbilical fissure.

Branches: Continues as Segment IV Artery.

Supplied Structures: Liver segment IV.

Complete Anatomy
The world's most advanced 3D anatomy platform
Try it for Free


The medial segmental artery arises from the left hepatic artery, though this is quite variable.

There is great confusion in the parameters of the medial segmental artery of the liver. In many cases, it is synonymous with segmental IV artery, and even its presence is often called into question as Segmental IV artery is commonly observed as a branch of the right hepatic artery (Jin et al., 2008; Favelier et al., 2015).


The medial segmental artery emerges from the left hepatic artery shortly after it enters the liver parenchyma and passes to the right as far as the umbilical fissure.


The medial segmental artery continues as Segment IV Artery, a macroscopic end artery.

Supplied Structures

The medial segmental artery supplies liver segment IV, both superiorly (segment IVa) and inferiorly (segment IVb).


Favelier, S., Germain, T., Genson, P. Y., Cercueil, J. P., Denys, A., Krausé, D. and Guiu, B. (2015) 'Anatomy of liver arteries for interventional radiology', Diagn Interv Imaging, 96(6), pp. 537-46.

Jin, G. Y., Yu, H. C., Lim, H. S., Moon, J. I., Lee, J. H., Chung, J. W. and Cho, B. H. (2008) 'Anatomical variations of the origin of the segment 4 hepatic artery and their clinical implications', Liver Transpl, 14(8), pp. 1180-4.

Learn more about this topic from other Elsevier products


ScienceDirect image

When the artery is occluded blood is forced through the collateral vessels, drastically increasing fluid shear stress and triggering an inflammatory response which drives vessel remodeling.

Explore on ScienceDirect(opens in new tab/window)

Complete Anatomy

The world's most advanced 3D anatomy platform

Complete Anatomy