OOgenesis

Production of ova in ovaries involving maturation and meiosis

OOgonium undergoes meiosis 1 stopping at prophase 1

OOgonium undergoes growth phase forming into primary oocyte

encapsulated by number of cells forming primary follicle. During growth/mature of follicle primary oocyte finishes the first meiotic division producing secondary oocyte and polar body

undergoes meiosis 2 stopping at metaphase 2 starting ovulation

Follicle ruptures releasing secondary OOcyte and polar body If penetration occurs meiosis II continues producing a OOtid f no penetration occurs secondary oocyte is released during menstruation

Must under go maturation to become mature ovum