THORAX ABDOMEN AND PELVIS

Detailed explanation-1: -The length of the menstrual cycle varies from woman to woman, but the average is to have periods every 28 days. Regular cycles that are longer or shorter than this, from 23 to 35 days, are normal. The menstrual cycle is the time from the first day of a woman’s period to the day before her next period.

Detailed explanation-2: -What Causes Long Menstrual Cycles? Longer cycles are caused by a lack of regular ovulation. During a normal cycle, it is the fall of progesterone that brings upon bleeding. If a follicle does not mature and ovulate, progesterone is never released and the lining of the uterus continues to build in response to estrogen.

Detailed explanation-3: -Your menstrual cycle lasts from the first day of your period to the first day of your next period. The average menstrual cycle is about 25-30 days, but it can be as short as 21 days or longer than 35-it’s different from person to person. The number of days in your cycle may also vary from month to month.

Detailed explanation-4: -Begin on day one of your period and count the number of days until your next period, which is day one of your next cycle. Track for 3 months and add the total number of days. Divide that number by three and you’ll have your average cycle length. Ovulation normally occurs 12-16 days prior to your period.