Lecture 14 2011 - Ovulation 3/29/11 Ovulation 3/29/11...

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3/29/11 Ovulation
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3/29/11 Ovulation
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3/29/11
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3/29/11 Ovulation LH surge 4-6 hours prior to ovulation Stigma is weakest part of follicle Collagen fibers are parallel Connective tissue absent. Has LH and progesterone receptors in fibroblasts along stigma (LH most important) Fibroblasts release enzymes on receptor binding
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3/29/11
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3/29/11 Follicle Ovulates Follicle = oocyte, plasma membrane and inner perivitellin layer Post ovulatory follicle = theca, basal lamina and granulosa -metabolically active at progressively lower rate for several days -structural reabsorption -functional in timing of egg lay
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3/29/11 Ovulatory cycle Ovulatory cycle= interval of time between consecutive ovulations Clutch = total number of eggs a bird will produce in a reproductive attempt (species dependant) Sequence length and pause day: 2 egg sequence xx-xx-xx 4 egg sequence xxxx-xxxx-xxxx *rate of production dependant on sequence length
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3/29/11 Indeterminate vs. Determinate layer
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Lecture 14 2011 - Ovulation 3/29/11 Ovulation 3/29/11...

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