From Standard of Care
Occurs in the ovarian follicle of the ovary.
Oocytogenesis is completed in the perinatal period.
A newborn female has all the oocytes she will have and it is about 7 x 10 to the 6th power.
Primary oocytes are arrested in prophase I until ovulation.
Secondary oocytes are arrested in metaphase II until fertilization.
Within minutes of fertilization the ootid cell type appears and becomes an ovum before pronuclei combine to form a zygote.
Maturation of the oocyte takes place within an ovarian follicle.