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16 Cards in this Set
- Front
- Back
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What cells secrete the zona pellucida?
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granulosa cells of epithelial origin
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The antrum appears in what folic stage?
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secondary
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Theca interna and externa layers are formed from?
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stromal cells (supportive tissue)
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Oocytes are suspended in what phase of Meiosis?
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Prophase I
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What prevents oocytes from entering metaphase of Meiosis I?
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oocyte maturation inhibition (peptide secreted by follicular cells)
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What is the stage called when primary oocytes are suspended in prophase I?
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diplotene stage
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Spermatogenesis initiated by?
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release of LH by ant. pit. which targets cells of Leydig which prompts testosterone production which binds to SERTOLI cells
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FSH binds to Sertoli cells to?
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initiate testicular fluid production and intracellular androgen receptor proteins
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Primordial germ cells appear in the yolk sac during what week?
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fourth week
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PGCs arrive in the gonads during what week?
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5
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The secondary oocyte is the product of meiosis I. Is it haploid or diploid?
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haploid
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An atretic follicle becomes an?
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corpus atreticum
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production of estrogen by theca interna cells and granulosa cells initiates?
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endometrium enters proliferative phase, cervical mucus thins, and surge in LH
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the LH surge created by increase in estrogen does what?
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causes oocytes to complete meiosis I and enter meiosis II, production of progesterone by stromal cells, causes ovulation
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The lutean cells making up the corpus luteum are of what origin?
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granulosa and follicular cells under the influence of LH
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HcG is secreted by?
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syncitiotrophoblast of the developing embryo
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