The menstrual phase or menstrual period
When a women is having her period, when she is bleeding, the lining of the uterus is breaking down and slowly flowing out of her body through the vagina over a period of days called the menstrual period or menstrual phase.
Menstruation is the term given to the periodic discharge of blood, tissue, fluid and mucus from the reproductive organs of sexually mature females. Bleeding usually lasts from 3 -5 days each month, and is caused by a sudden reduction in the hormones, estrogen and progesterone when the egg was not fertilized. For most of a woman's life, the egg that is released approximately once each month will not become fertilized, so the lining that develops each month for the possibility of a fertilized egg cell won't be needed. Over a period of days the blood vessels shrink and the uterus will shed the unneeded lining, made up of a small amount of blood and tissue.
The first day of the menstrual cycle: Cycle Day 1
The most obvious sign and the beginning of your monthly cycle is your menses or menstrual period. That's when you start bleeding. So we'll start there. Your menstrual period begins on the first day you see bright red blood (brown spotting does not count). The first day of your bleeding also happens to be the beginning of your menstrual cycle, or 'Cycle Day 1' (CD 1). So CD 1, or the first day of your menstrual bleeding or the beginning of your cycle, are all on the same day. You begin counting your menstrual cycle on cycle day 1
Source : Babymed
kredit : intimate |
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