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[Anatomy of the anal canal]
Anal canal | anatomy | Britannica
Background: The aim of this prospective study was to evaluate the relationship between the pathogenesis of anorectocele and the anatomy of the anal canal and anorectal junction using echodefecography. Methods: The study was conducted on a total of women with obstructed defecation, mean age We identified the layers of the anterior anorectal wall and measured anterior external sphincter length, posterior external sphincter and puborectalis length, gap between anterior external sphincter and anorectal junction, anorectal wall thickness in 3 locations: 1 proximal to anterior external anal sphincter; 2 anterior anorectal junction; 3 1. Results: The anterior part of the external anal sphincter was significantly longer in group I The gap was significantly shorter in group I
Related to anal canal: hemorrhoids , appendix , Ischioanal fossa. Alcock's canal a tunnel formed by a splitting of the obturator fascia, which encloses the pudendal vessels and nerve. Hunter's canal a fascial tunnel in the middle third of the medial part of the thigh, containing the femoral vessels and saphenous nerve. Called also adductor canal.
Anal canal , the terminal portion of the digestive tract , distinguished from the rectum because of the transition of its internal surface from a mucous membrane layer endodermal to one of skinlike tissue ectodermal. The anal canal is 2. The canal is divided into three areas: the upper part, with longitudinal folds called rectal columns; the lower portion, with internal and external constrictive muscles sphincters to control evacuation of feces ; and the anal opening itself. The anal canal connects with the rectum at the point where it passes through a muscular pelvic diaphragm.