Development of the anal canal muscles

descriptionPublicationkeyboard_double_arrow_right Article 01 Mar 1991 Italy English Publisher:Ovid Technologies (Wolters Kluwer Health)Journal:Diseases of the Colon & Rectum, volume 34, pages 262-266 (issn: 0012-3706,

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Authors: Levi AC; Borghi F; GARAVOGLIA, Marcello;

doi: 10.1007/bf02090167

pmid: 1999134

handle: 11579/4647

Development of the anal canal muscles

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Abstract

The anal canal muscles development is studied in 18 human embryos. The external anal sphincter results to origin common with the urogenital sphincter from the cloacal sphincter. The muscle, after its appearance, is subdivided into two portions from a thin mesenchymal layer. Moreover, our embryologic study clearly confirms that the puborectalis muscle is a portion of the levator ani, its primordium being common with the ileo and the pubococcygeus muscles. The anal smooth musculature appears later than the striated one.

Country

Italy

Related Organizations

University of Turin
Italy
Università del Piemonte Orientale
Italy

Keywords

Embryonic and Fetal Development, Muscles, Anal Canal, Humans, Gestational Age

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