3. Describe the changes that take place during the menstrual cycle from day 1-4 in the eggs in the overys

The average length of the menstrual cycle is 28–29 days,

Explanation:

but this can vary between ... Both pads and tampons need to be changed regularly (at least every four hours). ... Ovulation is the release of a mature egg from the surface of the ovary. This usually occurs mid-cycle, around two weeks or so before menstruation starts.