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The decrease in the levels of estrogen and progesterone.

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14y ago

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Related Questions

What hormonal change triggers the start of menstruation?

The hormonal change that triggers the start of menstruation is an increase in estrogen levels in the body.


At what age does menstruation occur?

Menstruation occur at the age of 9 to 16 years old


Does menstruation occur in the palm?

No.


Is menstruation still occur without having egg released from ovary?

Yes. Menstruation will still occur with out ovulation


Does menstruation occur if the egg is fertilized?

No, menstruation does not occur if the egg is fertilized. Instead, the fertilized egg implants in the uterus to begin pregnancy. If fertilization does not occur, then the uterine lining sheds during menstruation.


Can menstruation occur after implantation?

Yes!


When does menstruation typically occur in relation to ovulation?

Menstruation typically occurs about 14 days after ovulation.


What happens after day 28 to the uterine lining in the menstruation cycle?

After day 28 of the menstrual cycle, if pregnancy does not occur, hormone levels (particularly estrogen and progesterone) decrease. This decline triggers the shedding of the uterine lining, leading to menstruation. The thickened endometrial tissue is expelled through the vagina, marking the start of a new menstrual cycle.


Does menstruction occur?

No, menstruation occurs in individuals who have a uterus and typically identifies as female. Men do not experience menstruation.


What does menstruation occur?

on average every 28 days


Why does it make sense that the levels of estrogen and progesterone are low in the blood during menstruation?

During menstruation, the levels of estrogen and progesterone are low because the hormonal support for the uterine lining has diminished. After ovulation, if fertilization does not occur, the corpus luteum degrades, leading to a decrease in these hormones. This drop triggers the shedding of the uterine lining, resulting in menstruation. Essentially, low levels of these hormones signal the body to reset the menstrual cycle.


Which days during the menstrual cycle does menstruation menses occur?

Menstruation occurs at the start of the menstrual cycle and normally lasts around a week, so menstruation would occur days 1-7 of the menstrual cycle.