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Ovaries Blood supply ovarian follicles Cells around the oocyte are called: Follicle cells Granulosa cells

Ovaries Blood supply ovarian follicles Cells around the oocyte are called: Follicle cells Granulosa cells . Oogenesis: Puberty. Follicles Primordial follicle Primary follicle Secondary follicle Graafian follicle Ovulation Corpus luteum.

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Ovaries Blood supply ovarian follicles Cells around the oocyte are called: Follicle cells Granulosa cells

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  1. Ovaries • Blood supply • ovarian follicles • Cells around the oocyte are called: • Follicle cells • Granulosa cells

  2. Oogenesis: Puberty • Follicles • Primordial follicle • Primary follicle • Secondary follicle • Graafian follicle • Ovulation • Corpus luteum • -At puberty, one activated primary oocyte produces two haploid cells • -Ovulation • -If penetrated by sperm the second oocyte completes meiosis II

  3. Ovarian Cycle • ovaries grow and secrete small amounts of estrogens that inhibit the hypothalamic release of GnRH • As puberty nears, GnRH is released Monthly • Follicular phase • Ovulation • Luteal phase

  4. Fertilization and Embryonic Development Fertilization = The fusion of two haploid gametes (egg and sperm) n – haploid, 23 chromosomes 2n – diploid, 46 chromosomes

  5. The three stages of Fertilization • Penetration • Activation • Fusion

  6. Early Development Cleavage Implantation Gastrulation

  7. Gastrulation • Ectoderm • Endoderm • Mesoderm

  8. Extra Embryonic Membranes: • Yolk Sac • Amnion • Allantois • Chorion

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