External Anal Sphincter

Some articles on anal, external anal sphincter:

Anismus - Etiology
... anatomy includes the rectum, the anal canal and the muscles of the pelvic floor, especially puborectalis and the external anal sphincter ... The rectum is a section of bowel situated just above the anal canal and distal to the sigmoid colon ... The anal canal is the short straight section of bowel between the rectum and the anus ...

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