The development and organization of the sphincter ani externus and the adjacent part of the levator ani muscle in man.
D001003:Anal Canal / Q000033:anatomy & histology / Q000196:embryology*; D002675:Child, Preschool; D005260:Female; D006801:Humans; D007223:Infant; D008297:Male; D009132:Muscles / Q000033:anatomy & histology / Q000166:cytology / Q000196:embryology*; D011247:Pregnancy