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The menstrual cycle


The menstrual cycle is a cycle of approximately 28 days. It is process in which

the uterus lining builds up in anticipation of the arrival of an egg. If the egg is

not fertilized, the uterus is shed and released in blood through the vagina.

 

The main features of the cycle are

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Day one  – this is when the menstruation begins, the uterus lining is

                     breaking down and being removed in blood through the

                     vagina.

 

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