[A study on the surgical anatomy of the anorectal ring].
D000328:Adult; D001003:Anal Canal / Q000033:anatomy & histology* / Q000502:physiology; D002648:Child; D005260:Female; D006801:Humans; D008297:Male; D009130:Muscle, Smooth / Q000033:anatomy & histology; D012007:Rectum / Q000033:anatomy & histology* / Q000502:physiology