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Longitudinal Muscle of Muscularis Externa in Human and Nonhuman Primate Colon
Ian D. Fraser, MB, FRCS;
Robert E. Condon, MD;
William J. Schulte, MD;
Jerome J. DeCosse, MD;
Verne E. Cowles
Arch Surg. 1981;116(1):61-63.
Abstract
The idea that the longitudinal muscle of the muscularis externa of the colon is confined to the colonic teniae in the monkey and human is a common conceptual error. Forty-six colon specimens taken from human and nonhuman primates were reviewed histologically and the distribution and structure of the longitudinal muscle were evaluated. We found that the longitudinal muscle forms a complete coat around the colon although it is considerably thicker in the region of the teniae coli. In addition to its anatomic importance, this observation has implications for the physiology of colon muscle and for certain current hypotheses concerning the etiology of diverticulitis.
(Arch Surg 116:61-63, 1981)
Author Affiliations
From the Surgical and Research Service, Veterans Administration Medical Center, Wood, Wis; and the Division of Surgery, The Medical College of Wisconsin, Milwaukee.
Footnotes
Accepted for publication June 16, 1980.
This work forms part of a thesis to be submitted by Dr Fraser for the degree of Master of Surgery of the University of London.
Reprint requests to 8700 W Wisconsin Ave, Milwaukee, WI 53226 (Dr Condon).
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