Oogenesis: Production of Eggs
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Fetus: oogonia (diploid stem cells) ------> primary oocytes w/ follicle cells (prim. follicle) ------> primary oocyte arrested in Prophase I (ovary cortex)
Childhood: about 700,000 primary oocytes ready to go
Puberty: primary oocyte (primordial follicle) ------> completes Meiosis I to produce 2 haploid cells ------> secondary oocyte + first polar body
Ovulation: secondary oocyte released by ovary
Fertilization: sperm penetrates secondary oocyte ------> completion of Meiosis II to produce ------> 1 very large haploid OVUM + polar body
Tags: Oogenesis, Fertilisation
Category: Physiology Notes
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