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24 Cards in this Set

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