<prompt> True about anal membranePerforates at 6 weeksDevelops from anterior pa of cloacal membranceLies at proximal pa of proctodaeumCovers urogenital sins  <response>: Before the urorectal septum has an oppounity to fuse with the cloacal membrane, the membrane ruptures, exposing the urogenital sinus and dorsal anorectal canal to the exterior. Later on, an ectodermal plug, the anal membrane, forms to create the lower third of the rectum. ref - Semantischolar.org ref - BDC vol2 