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Updated: Oct 23, 2025

Targeting the Rat's Small Bowel: Long-Term Infusion into the Superior Mesenteric Artery
Published on: April 8, 2021
Arterial supply to the rat colon
Tetsuhito Kigata1,2, Hideshi Shibata2, Yasushi Kobayashi1
1Department of Anatomy and Neurobiology, National Defense Medical College, Tokorozawa, Japan.
Detailed arterial supply maps of the rat colon were analyzed in 34 rats. Findings reveal specific patterns and frequent variations in colic arteries, crucial for reproducible surgical models.
Area of Science:
- Veterinary Anatomy
- Surgical Research
- Animal Models
Background:
- Accurate arterial supply knowledge is vital for rat colectomy models.
- Previous studies lacked detailed arterial mapping of the rat colon.
Purpose of the Study:
- To analyze the arterial distribution pattern and variations in the rat colon.
- To provide essential data for reproducible rat colic surgery models.
Main Methods:
- Detailed analysis of arterial distribution in the colons of 34 rats.
- Categorization of individual variations in arterial branching and anastomosis.
Main Results:
- The rat colon receives colic branches from ileocolic, right, middle, and left colic arteries.
- The left colic artery consistently arises from the caudal mesenteric artery.
- Significant variations were observed in the number and distribution of ileocolic, right, and middle colic arteries, categorized into 11 patterns.
Conclusions:
- Rat colon arterial supply exhibits a specific pattern with frequent individual variations.
- This anatomical data is essential for improving the reproducibility of rat colic surgery models.
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