part_of reproduction developmental process process of ovulation 2007-11-27T12:21:00Z IDOMAL:0002361 IDOMAL:0002361 Ovulation is defined as the extrusion of mature oocytes from the ovarian follicles into the calyces and oviducts. Ovulated oocytes enter the vagina, from which they are extruded through the gonotreme at oviposition. Sperm penetrate an oocyte while it is within the vagina. Very soon after oviposition the oocyte chromosomes complete meiosis, and at that stage the oocyte is considered to have transformed into an egg. elvira idomal_namespace