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Anorectal Musculature Anatomy


Anorectal Musculature Anatomy
Anterior view, Sigmoid colon, Free taenia, Fibers of taenia spread out to form longitudinal muscle layer of rectum, Fibers from longitudinal muscle join circular muscle layer, Window cut in longitudinal muscle layer to expose underlying, Circular muscle layer, Levator ani muscle, Rectosigmoid junction, Deep, Superficial, Subcutaneous, 

Parts* of external anal sphincter muscle, Fibrous septum, Perianal skin, Corrugator cutis ani muscle, Superior fascia of pelvic diaphragm, Inferior fascia of pelvic diaphragm, Levator ani muscle, Rectal fascia, Longitudinal muscle of rectum, Circular muscle of rectum, Muscularis mucosae of rectum, Deep part* of external anal sphincter muscle, Internal rectal venous plexus, Conjoined longitudinal muscle, Superficial part* of external anal sphincter muscle, Internal anal sphincter muscle, Muscularis mucosae of anal canal, Transverse fibrous septum of ischioanal fossa, Subcutaneous part* of external anal sphincter muscle, Corrugator cutis ani muscle, External rectal venous plexus, Intersphincteric groove (anocutaneous line) Coronal section.
Anorectal Musculature Anatomy