Hi,thanks for query.I think there is some confusion.It is not possible to see internal anal sphincter with naked eye.One can feel it,and also requires skill.The external anal opening,anus is elastic in nature and it opens up while passing stool.bye.
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when someone parts his buttock and sees the external anal sphincters parting, but the internal ones are comppletely closed..is that a problem?? or is the external one should be also closed when u part ur buttocks?
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