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OOGENESIS

OOGENESIS. DR.SHABANA ALI. FEMALE REPRODUCTIVE SYSTEM. Resume. Meiosis one complete. 2 nd meiosis. Metaphase arrest. Meiosis 2 completes. Every month,15-20 follicles are selected and they mature in three stages 1.primary/preantral 2.secondary/antral-longest

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OOGENESIS

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  1. OOGENESIS DR.SHABANA ALI

  2. FEMALE REPRODUCTIVE SYSTEM

  3. Resume Meiosis one complete 2nd meiosis Metaphase arrest Meiosis 2 completes

  4. Every month,15-20 follicles are selected and they mature in three stages • 1.primary/preantral • 2.secondary/antral-longest • 3.preovulatory-37 hrs before ovulation

  5. INTRAUTERINE LIFE

  6. PRIMORDIAL FOLLICLE 1.Primary oocyte 2.flat cell layer

  7. PRIMARY FOLLICLE 1.granulosa cells..stratfied cuboidal cells 2.zona pellucida..Acelluler,glyco protein layer,impermeable 3.theca folliculi…theca externa and interna

  8. SECONDARY FOLLICLE 1.Antrum 2.cumulus oophorus 3.size-increased 4.25mm in size

  9. CORPUS LUTEUM 1.cell number increased 2.vascularity increased 3.size… more than 25mm

  10. CORPUS ATRETICUM 1.cell number decreased 2.vascularity decreased 3.degeneration

  11. CORPUS ALBICAN 1.Fatty degeneration of cells 2.Fibrous tissue

  12. Gonadotropins, Hormones, and the Ovarian and Uterine Cycles

  13. Pituitary-Ovarian Axis

  14. oogenesis

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