Around 7 days
5-7 days depends on the person
Around 7 days
no rats have an estrous cycle, not a mestrual cycle.
When your ovulating.
If you haven't had a menstrual cycle for that long you're pregnant or there's something wrong with your health. Either way you need to see a doctor.
a womans period should come at an average of every 28 days
11 years in average.
28 days
the uterine lining builds-up during the proliferate phase of the menstrual cycle. Everyone's menstrual cycles are different, but during a 28 day cycle this phase would be around days 16-28.
Around 90-110 minutes for adults and in children it's about 45 minutes.
4 years we all die
Average of about 7 years
The average menstrual cycle is 28 days. Five days for the menstrual phase (when a woman's endometrium is being expelled, also known as a period), nine days for the proliferative phase (when the endometrium is developing), zero days for ovulation (when a ripe ova, or egg cell, is deposited from an ovary), and fourteen days for the secretory phase (when the endometrium continues to develop.