part of part of embryo peritoneum abdominal wall peritoneal vaginal process http://upload.wikimedia.org/wikipedia/commons/e/ed/Mesorchium.svg vaginal process of peritoneum vaginal process processus vaginalis processus vaginalis peritonei A peritoneal diverticulum in the embryonic lower anterior abdominal wall that traverses the inguinal canal. In the male it forms the tunica vaginalis testis and normally loses its connection with the peritoneal cavity; a persistent processus vaginalis in the female is known as the canal of Nuck[MP]. Wikipedia:Processus_vaginalis SCTID:362726001 vaginal process of the peritoneum processus vaginalis peritoneus vaginal process of testis UBERON:0005344 processus vaginalis peritonei masculinus peritoneal diverticulum vaginal process of peritoneum saccus vaginalis fold of peritoneum