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24 Cards in this Set
- Front
- Back
produces cAMP that inhibits expulsion of 1st polar body
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Corona radiata
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promotes the maturation of the egg
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Cyclin
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comes from the corona radiata
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Cyclin
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oocyte is arrested during what phase of meiosis
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prophase
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what aids in the cumulus expansion in follicles during the formation of secondary oocyte
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hyaluronic acid
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when starts luteinization during the formation of the secondary oocyte
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lh surge
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when women are depleted on oocytes
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menopause
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The period of oogenesis development
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1. mitotic division
2. nuclear arrest 3. cytoplasmic growth 4. resumption of meiosis |
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occurs in the fetal development from primordial germ cells to oogonia
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Mitotic division
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whyis The last mitotic division from the germ cells to the oogonia is important
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at the end, meiosis begins, but it arrested in prophase I.
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product of the initialization of prophase I
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primary oocytes
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a proteolytic degradation of follicular and ovarian cell layers
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ovulation
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degradation of follicular connective tissue at apex of follicle
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ovulation
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dissolution of granulosal basement membrane
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ovulation
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stimulated by pre-ovulatory lh surge
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ovulation
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Primary oocytes remain semi-dormant until called into action by what hormone
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FSH (puberty)
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Growth of the Oocyte is dependant upon what cells of the follicle
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granulosa cells
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during Cytoplasmic Growth Granulose cells secrete
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mucopolysaccharide
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what induces the completion of meiosis I (livestock, this is before ovulation, other species, this is after ovulation).
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LH surge (Preovulatory)
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What that is between the granulose cells break down before meiosis resumption.
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Gap junctions
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what yields the first polar body and it is extruded to the perivitelline space
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Completion of meiosis I
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when the Oocyte is fertilized (Ampulla-Isthmus junction) and before the pronuclei fuse (syngamy = fusion of sperm genetic material and Oocyte genetic material) what is initiated.
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Meiosis II
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yields the second polar body and it is extruded into the perivitelline space (if first polar body divides within the perivitelline space, you get three polar bodies).
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Completion of meiosis II
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steps of oogenesis and ovulation
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1. Oocyte Maturation
2. Preovulatory LH Surge 3.Ovulation and Fertilization 4. Fertilized Oocyte Maturation |