Progesteron increase motility of fallopian tubes or decrease?

progesteron increase motility of fallopian tubes or decrease?

Progesterone is a hormone that plays a crucial role in the female reproductive system, and its effects on the fallopian tubes depend on the timing of its secretion.

During the follicular phase of the menstrual cycle (the first part of the cycle before ovulation), the fallopian tubes are stimulated by estrogen, which increases their motility and helps to move the egg from the ovary toward the uterus. At this stage, progesterone levels are low and do not have a significant effect on the fallopian tubes.

However, after ovulation, the corpus luteum (a structure that develops from the ruptured follicle in the ovary) begins to secrete progesterone. Progesterone has a different effect on the fallopian tubes during this luteal phase of the menstrual cycle. It causes the fallopian tubes to become less motile, which helps to slow down the transport of the fertilized egg toward the uterus. This delay allows time for the fertilized egg to implant in the uterus and establish a pregnancy.

So, in summary, progesterone decreases the motility of the fallopian tubes during the luteal phase of the menstrual cycle.