With Diagram Explain Menstrual Cycle. It extends from 1 st to 4 th day of the cycle. Its marked as the day1 of periods which normally lasts for 3 to 7 days.
The menstrual cycle is from day 1 of bleeding to day 1 of the next instance of bleeding. The average cycle is 28 days although it is perfectly normal to have a cycle that is as short as 21 days or as long as 35 days. It extends from 1 st to 4 th day of the cycle.
Menstruation occurs after progesterone levels drop.
The menstrual cycle is divided into four phases. The menstrual cycle is a reproductive cycle which takes place in the females of the group of primates. The menstrual cycle with all its complexities can be easily perturbed by environmental factors such as stress extreme exercise eating disorders and obesity. While menstrual bleeding does happen in the early part of this phase the ovaries are simultaneously preparing to ovulate again.