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22 Cards in this Set
- Front
- Back
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primordial cells in female arrive to gonads and differentiate to what type of cell?
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oogonia
think "gonna" become an ovum |
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after becoming oogonia, the cells are arranged in clusters surrounded by a layer of flat epithelial cells known as?
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follicular cells
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oogonia transform into?
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primary oocytes
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what is fate of primary oocytes
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most within the gonad die.
a few close to the surface survive |
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what is the fate of primary oocytes that have survived?
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they enter into prophase I
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primary oocyte + surrounding flat epitheleal cell is ka?
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primordial follicle
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at birth, what is the state of the female reproductive cells?
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they are all in prophase I
they are known as primary oocytes here and they are within the primordial follicle structure |
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what is diplotene stage?
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the arrest of primary oocytes at prophase I
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at puberty, primary oocytes are activated one after another until menopause. how many follicles are activated monthly
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about 15-20
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As the 15-20 folicles grow, what happens to epithelia around the cell?
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it turns from simple flat to stratified cuboidal
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what is the name of the stratified cuboidal epithelium?
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granulosa cells
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granulosa cells rest on a basement memb ka?
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theca folliculi
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the unit that is the primary oocyte within the stratified cuboidla epithelium is known as?
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primary follice
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oocytes and granulosa cells secrete a layer of glycoproteins on surface, this forms the?
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zona pellucida
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as follicle grows, what 2 cells form around?
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1. theca interna - inner layer of secretory cells
2. theca externa - fibrous capsule |
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antrum
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formation of fluid filled spaces b/w granulosa (pg 24)
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full development of antrum now classifies cell as?
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secondary follicle
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mature secondary follicle triggers rise in what hormone?
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LH
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LH induces?
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preovulatory growth phase to finish Meiosis I
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two cells form at end of meosis I
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secondary oocyte and polar body
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secondary oocyte enters meosis II. What happens next
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arrest before ovulation
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cell has how many hours to be fertilized before death?
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less than 24 hours
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