How long is the anal canal

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The authors measured the length of the surgical anal canal (anorectal ring to anal verge) in 108 men and 103 women the age ranged from 18 to 90 years (average 59 years). It is located in a position between the rectum and the anus, under the level of the pelvic diaphragm. It is situated in the anal triangle of the perineum, between the left and right ischioanal fossa. The anal canal begins where the distal end of the rectal ampulla sharply narrows and passes inferiorly and outward to the anal opening. The anal canal is about 2 cm long in the infant, increasing to about 4. 69 the canal occupies the ischiorectal fossa, where it is supported by a number of ligaments and muscular attachments as. The anal cavity is about 1 to 2 inches long, depending on the anatomy of the person. 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 panama canal (spanish canal de panam) is an artificial 82 km (51 mi) waterway in panama that connects the atlantic ocean with the pacific ocean. The canal cuts across the isthmus of panama and is a conduit for maritime trade. Canal locks are at each end to lift ships up to gatun lake, an artificial lake created to reduce the amount of excavation work required for the canal, 26 m (85 ft.).   the anal canal is the last part of the gastrointestinal tract. It is about 3 to 4 cm long and lies completely extraperitoneally. It begins at the anorectal junction distally from the perineal.

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