The Clinical Anatomy of the Vascular System | Ch 72

Document Type

Book Chapter

Publication Date

6-12-2025

Editor

Stephen J. Bordes, Jr. et al

Abstract

During the third week of development, a primitive heart and vasculature form. The branches of the lower abdominal aorta begin to form at the 6 mm stage embryo (Qazi et al. 2022). In the fourth week of fetal development, the umbilical arteries anastomose with the fifth lumbar intersegmental artery branches to become the dominant placental-aortic connection (Qazi et al. 2022). The umbilical arteries arise as a branch off the dorsal aorta, but once they anastomose and communicate with the intersegmental artery, they disconnect from the dorsal aorta (Hegazy 2016). The fifth lumbar intersegmental artery gives rise to the external iliac artery, while the umbilical artery is attached to its distal end, which later forms the internal iliac artery (Greebe 1977). The proximal part of the internal iliac artery will persist as the distal end obliterates (Zaunbrecher and Samra 2022). The internal iliac artery bifurcates into an anterior and posterior division as development continues. Branches of the anterior division include the superior and inferior vesical arteries, middle rectal artery, uterine arteries, and vaginal artery. The first branch of the posterior division to develop is the iliolumbar artery. The lateral sacral and superior gluteal arteries also develop as branches of the posterior division of the internal iliac artery.

First Page

471

Last Page

473

Chapter Title

Chapter 72 - Iliolumbar Artery

Publisher

Springer Nature

ISBN

[9783031783258, 9783031783265]

Rights

© 2025 The Author(s), under exclusive license to Springer Nature Switzerland AG

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