The presence of hormones produced by the after implantation prevent menstruation.
Question
The presence of hormones produced by the
after implantation prevent menstruation.
Solution
The hormone that prevents menstruation after implantation is produced by the placenta. This hormone is called human chorionic gonadotropin (hCG). Here are the steps:
- After the fertilized egg (embryo) implants into the lining of the uterus, the cells that will become the placenta begin to produce hCG.
- hCG signals the corpus luteum (the remnant of the follicle that produced the egg) in the ovary to continue producing progesterone.
- Progesterone helps maintain the thickened lining of the uterus, preventing menstruation.
- As the placenta develops, it takes over the production of progesterone from the corpus luteum.
- The continued presence of progesterone prevents menstruation for the duration of the pregnancy.
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