Question

explain the menstrual cycle using the menstrual flow chart

Answer 1

Hey Friend,

During each menstrual cycle, an ovum matures and is released once every 28 days. For convenience this period can be divided in the following four phases...

1. Menstrual phase - 

(i) It lasts for 3-5 days.
(ii) During this phase, the uterine lining is shed off with blood flow.

2. Follicular phase -

(i) It starts from 5th and lasts upto 13th day.
(ii) During this phase, the ovary begins to form the Graffin follicle. This follicle produces oestrogen.
(iii) Oestrogen stimulates the uterus to prepare itself to receive the ovum.
(iv) The endometrium thickens and a dense network pf blood vessels develops.

3. Ovulatory phase -

(i) On the 14th day
(ii) During this phase, the Graffin follicle ruptures and releases ovum. (OVULATION)
(iii) This egg is picked up by the fimbrae and descends down the oviduct.

4. Luteal phase - 

(i) It lasts from 15th day upto 28th day.
(ii) During this phase, the ruptured Graffin follicle forms mass of cells called corpus luteum. 
(iii) It releases progesterone
(iv) if fertilization occurs, implantation takes place.

Hope it helps!

Answer 2

Answer:

It is not uncommon for the menstrual period to last 7-8 days.  It is also not uncommon for periods to be irregular the first year or two of a young woman's cycles, and during the peri-menopause transition to menopause which can last anywhere from a few months to 10 years or more.  28 days is the average time of the cycle but can be a few days less or more. It is an individual matter. Also, it is common for multiple women living in the same household to have their periods at the same time.