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→Histology
**'''Cutaneous'''
**'''Cutaneous'''
***Skin.
***Skin.
***Stratified squamous epithelium.
***Stratified squamous keratinised epithelium.
***Surrounds the anus.
***Surrounds the anus.
***Excretory ducts of the anal sacs open into this region.
***Excretory ducts of the anal sacs open into this region.