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Mr. Ng

on 10 May 2012

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Transcript of Ovulation

Ovulation Process in which an ovarian follicle ruptures and releases an oocyte (egg) Oogenesis meiosis I occurs each month starting from puberty and ending at menopause (45-55) Primary oocyte Secondary oocyte (egg) Zygote (46 chromosomes) (23 chromosomes) (46 chromosomes) meiosis I ONLY when the sperm enters the secondary oocyte does the oocyte proceed to meiosis II polar body
(nonfunctioning cell) { polar bodies { Anatomy of an Ovary primary follicle maturing follicle mature follicle secondary oocyte ruptured follicle follicle= group of cells surrounding oocyte corpus luteum corpus albicans contains primary oocyte produces estrogen contains secondary oocyte produces estrogen and progesterone ovulation produces estrogen and progesterone remains of corpus luteum only forms if the egg is NOT fertilized if the egg is fertilized and is implanted in the uterus, the corpus luteum continues to produce hormones for 6 months meiosis I meiosis I meiosis II meiosis II meiosis II meiosis II
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