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The menstrual cycle

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Harvey Buckle

on 8 August 2016

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Transcript of The menstrual cycle

To know the stages of the menstrual cycle
To know the reasons behind the menstrual cycle
In a diagram
How long?
The menstrual cycle usually lasts approximately 28 days. The first day of the cycle is the first day of a woman’s period (menstruation). The period – which usually lasts for 3-7 days - is made up of blood and the uterus lining. It passes out of the body through the vagina.
What do hormones do?
The menstrual cycle is controlled by the hormones oestrogen and progesterone.

Oestrogen is produced by the ovaries and makes the lining of the uterus repair itself and grow again after menstruation.

Progesterone is produced by the empty follicle in the ovary after the egg has been released. This hormone maintains the lining of the uterus during the second half of the menstrual cycle.

Little sascha was born premture...what does THAT mean?
The menstrual cycle
A woman is fertile, on average, between the ages of 12 to 50. During these fertile years, a recurring process - known as the menstrual cycle - takes place each month. This involves the lining of the uterus preparing for pregnancy. If pregnancy does not occur, the lining breaks down and the woman has a period. This is also known as menstruation.
The menstrual cycle
Pregnancy? what then?
If a woman becomes pregnant the follicle continues to produce progesterone and a placenta is formed. If pregnancy does not occur, then both hormone levels drop towards the end of the menstrual cycle, the lining breaks down and menstruation occurs
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