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ColonRectumandAnus ppt

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  Colon, Rectum, and AnusColon, Rectum, and Anus South College PA Surgical CourseSouth College PA Surgical Course  Colon and RectumColon and Rectum  Terminal portion of GI tractTerminal portion of GI tract  Two functionsTwo functions   Absorption of water, electrolytes Absorption of water, electrolytes  Storage of fecesStorage of feces  Biologically not essentialBiologically not essential  Disease is very commonDisease is very common   Anatomy Anatomy  Multiple partsMultiple parts  Retroperitoneal and peritoneal portionsRetroperitoneal and peritoneal portions  External longitudinal muscle layersExternal longitudinal muscle layers — —teniaeteniaecolicoli  RectumRectum — —15 cm, external layer continuous15 cm, external layer continuous   Anus Anus — —33--4 cm from dentate line to anal 4 cm from dentate line to anal vergeverge   Above dentate line Above dentate line----insensateinsensate
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