The anal canal and rectum: their varying relationship and its effect on anal continence.
D000328:Adult; D000368:Aged; D001003:Anal Canal / Q000502:physiology*; D002648:Child; D003287:Contrast Media; D003672:Defecation / Q000502:physiology*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010388:Pelvis / Q000000981:diagnostic imaging; D011187:Posture; D011859:Radiography; D012007:Rectum / Q000502:physiology*
D003287:Contrast Media