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By Dr. Paulien Moyaert
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Get instant insights and key takeaways from this YouTube video by Dr. Paulien Moyaert.
The Menstrual Cycle Phases
π The cycle starts with the follicular phase, marked by menstrual bleeding when estrogen and progesterone levels are low, causing the uterine lining breakdown.
π¬ The pituitary gland releases follicle-stimulating hormone (FSH), stimulating 5 to 20 follicles, with one becoming the dominant follicle that produces rising estrogen.
π₯ The ovulatory phase is initiated by a surge in luteinizing hormone (LH), causing the dominant follicle to release the egg, typically around day 14.
Hormonal Regulation and Uterine Preparation
π Rising estrogen during the follicular phase inhibits FSH, causing smaller follicles to die off while thickening the uterine lining with nutrients and blood in preparation for potential pregnancy.
π Following ovulation, the luteal phase begins; the ruptured follicle forms a corpus luteum that secretes estrogen and progesterone, further thickening the uterine lining.
π If fertilization does not occur, the corpus luteum degrades 9 to 11 days post-ovulation, causing estrogen and progesterone levels to drop, leading back to menstruation.
Key Points & Insights
β‘οΈ Estrogen drives uterine preparation: Increased estrogen during the follicular phase ensures the uterine lining is richly supplied with blood and nutrients for a fertilized egg.
β‘οΈ LH surge triggers ovulation: A significant rise in LH is the direct trigger for the dominant follicle to release its egg, usually 16 to 32 hours later.
β‘οΈ Corpus Luteum Function: This structure is crucial in the luteal phase, maintaining uterine thickness via estrogen and progesterone until pregnancy status is confirmed.
πΈ Video summarized with SummaryTube.com on Nov 27, 2025, 19:56 UTC
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Full video URL: youtube.com/watch?v=Is1LOacgWkc
Duration: 2:23
Get instant insights and key takeaways from this YouTube video by Dr. Paulien Moyaert.
The Menstrual Cycle Phases
π The cycle starts with the follicular phase, marked by menstrual bleeding when estrogen and progesterone levels are low, causing the uterine lining breakdown.
π¬ The pituitary gland releases follicle-stimulating hormone (FSH), stimulating 5 to 20 follicles, with one becoming the dominant follicle that produces rising estrogen.
π₯ The ovulatory phase is initiated by a surge in luteinizing hormone (LH), causing the dominant follicle to release the egg, typically around day 14.
Hormonal Regulation and Uterine Preparation
π Rising estrogen during the follicular phase inhibits FSH, causing smaller follicles to die off while thickening the uterine lining with nutrients and blood in preparation for potential pregnancy.
π Following ovulation, the luteal phase begins; the ruptured follicle forms a corpus luteum that secretes estrogen and progesterone, further thickening the uterine lining.
π If fertilization does not occur, the corpus luteum degrades 9 to 11 days post-ovulation, causing estrogen and progesterone levels to drop, leading back to menstruation.
Key Points & Insights
β‘οΈ Estrogen drives uterine preparation: Increased estrogen during the follicular phase ensures the uterine lining is richly supplied with blood and nutrients for a fertilized egg.
β‘οΈ LH surge triggers ovulation: A significant rise in LH is the direct trigger for the dominant follicle to release its egg, usually 16 to 32 hours later.
β‘οΈ Corpus Luteum Function: This structure is crucial in the luteal phase, maintaining uterine thickness via estrogen and progesterone until pregnancy status is confirmed.
πΈ Video summarized with SummaryTube.com on Nov 27, 2025, 19:56 UTC
Find relevant products on Amazon related to this video
As an Amazon Associate, we earn from qualifying purchases

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