Superior Mesenteric Artery during Intestinal Loop Formation and Its Positional Changes from the Extracoelom to the Abdominal Cavity.

ABSTRACT:

Introduction: Features of the superior mesenteric artery (SMA) and its intestinal branches during the embryonic and early fetal periods have not been fully described. We aimed to comprehensively elucidate the characteristics of intestinal branch artery formation in the SMA.

Methods

Serial tissue sections of seven early fetal specimens belonging to the Blechschmidt collection were digitalized and used for segmentation and reconstruction of the intestinal loop, SMA trunk, intestinal branch arteries, and mesentery for further analysis.

Results

The intestinal branch arteries fed the intestinal tract from the oral side to the anal side, according to the order of their origin from the root to the periphery of the SMA trunk. SMA and intestinal branches were not as strongly conser

SUBMITTER: Takakuwa T 

PROVIDER: S-EPMC12101812 | biostudies-literature | 2026

REPOSITORIES: biostudies-literature