Question

WHAT HAPPENS IN PERIODS
EXPLAYAN IN BRIEFLY
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Answer 1

Answer:

A period happens because of changes in hormones in the body. Hormones are chemical messengers. The ovaries release the female hormones estrogen and progesterone . These hormones cause the lining of the uterus (or womb) to build up. The built-up lining is ready for a fertilized egg to attach to and start developing.

Explanation:

Answer 2

Answer:

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. Premenstrual syndrome, or PMS, is a group of symptoms that start before the period.