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Advanced Medical (NUR2212) Ovulation And Fertilization

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John Marsh
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Miami Dade College

Advanced Medical-Surgical Nursing (NUR2212)

Video notes- ovulation and fertilization

OVULATION VIDEO NOTES
• The Reproductive cycles begins with ovulation
◦ the release of a ripe egg, or ovum, from the ovary
◦ hundreds of thousands of follicles sit nestled inside the ovary
◦ each follicle is a sphere of cells with an immature egg at its center
• the typical 28 day menstrual cycle begins on the first day of menstrual bleeding
◦ during the first 7 days of the cycle a few follicles start to grow
◦ these maturing follicles secrete estrogen hormone into the blood stream to prepare the lining
of the uterus for prgnancy
• around day 7
◦ all of the follicles stop growing and begin to degenerate
▪ except for one!!
• this dominant follicle continues to grow
• nourishing the developing egg inside it
• around day 12
◦ the follicle secretes a surge of estrogen into the blood stream
▪ when the estrogen reaches the hypothalamus and the pituitary gland in the brain…
▪ the anterior or front part of the pituitary gland floods the blood stream with Luteinizing
Hormone (LH)

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Advanced Medical (NUR2212) Ovulation And Fertilization

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