Question

paragraph on menstruation

Answer 1

the menstrual cycle is the characteristic of primates . it starts at the time of puberty and the period is called menarche.
menstrual cycle in humans lasts for 28days. The days are remembered from the first day of blood flow in the menstrual period . A series of events occur regularly in females after every 26 to 30 days throughout the childbearing period of 32yrs.
The menstrual cycle consists of a series of changes that takes place simultaneously in the ovaries and uterine wall stimulated by different concentrations of gonadotropin like FSH and LH
follicle stimulating hormone promotes the maturation of ovarian follicles and secretion of oestrogen leading to ovulation while luteinising hormone stimulates the development of corpus leteum and secretion of progesterone.
there are four main phases of menstrual cycle .-
1) Menstrual phase
2)proliferative phase
3)Ovulatory phase
4)luteal phase

Answer 2

Answer:

Menstruation, or period, is normal vaginal bleeding that occurs as part of a woman's monthly cycle. Every month, your body prepares for pregnancy. If no pregnancy occurs, the uterus, or womb, sheds its lining. The menstrual blood is partly blood and partly tissue from inside the uterus. It passes out of the body through the vagina.

Periods usually start between age 11 and 14 and continue until menopause at about age 51. They usually last from three to five days. Besides bleeding from the vagina, you may have

Abdominal or pelvic cramping pain

Lower back pain

Bloating and sore breasts

Food cravings

Mood swings and irritability

Headache and fatigue

Premenstrual syndrome, or PMS, is a group of symptoms that start before the period. It can include emotional and physical symptoms.

Consult your health care provider if you have big changes in your cycle. They may be signs of other problems that should be treated.