part of part of in lateral side of develops from develops from tube embryo intermediate mesoderm Mullerian duct http://upload.wikimedia.org/wikipedia/commons/6/6d/Gray1109.png In females, the archinephric (mesonephric) ducts tend to function only within the urinary systems. The muellerian duct arises embryologically next to the archinephric (wolffian) duct. In males, the muellerian duct regresses if it appears at all, but in females, the muellerian ducts become the oviducts of the reproductive system.[well established][VHOG] Either of the paired embryonic ducts developing into the uterine tubes, uterus, and vagina in the female and becoming largely obliterated in the male. [TFD][VHOG] XAO:0000330 Transient developmental organ which gives rise to oviducts in female (documented to persist in some male frogs).[AAO] RETIRED_EHDAA2:0001399 VHOG:0001199 paramesonephric duct UMLS:C0026732 GAID:1309 Paired ducts of the embryo that run down the lateral sides of the urogenital ridge and terminate at the mullerian eminence in the primitive urogenital sinus. In the female, they will develop to form the fallopian tubes, uterus, and the upper portion of the vagina; in the male, they are lost. These ducts are made of tissue of mesodermal origin[WP]. develops either by lengthwise splitting of the archinephric duct (in chondrichthyans and some amphibians) or by a elongated invagination of the coelomic epithelium (other vertebrates) In males, the oviducts regress. The cranial end of the oviduct maintains an opening into the coelom (which primitively may have been the anteriormost coelomic funnels connecting the nephrocoel with the coelom). This opening is the ostium tubae[USM]. Muellerian duct ductus paramesonephricus early paramesonephric duct Sertoli cells secrete anti-Mullerian hormone (AMH) inducing the demise of this duct MESH:D009095 AAO:0010141 EMAPA:27665 EHDAA2:0004048 NCIT:C13260 UBERON:0003890 SCTID:308802006 Wikipedia:Paramesonephric_duct Müllerian duct UBERON:0005318 mesoderm-derived structure lateral structure