Menstrual cycle and fertility

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define menstrual cycle
the reproductive cycle in women controlled by hormones
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pituitary glands and overies
a womans hormones are made in her pituitary glands and her ovaries control her menstrual cycle
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menstrual cycle average length
28 days
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1st step
lining of the womb starts to thicken and a egg starts to mature in the overies
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what happens 14 days after the egg starts maturing
it is released by the overies
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if a egg is fertilised by a sperm
the pregnancy will take place and the lining of the womb will provide protection and food for the developing embryo
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if the egg is not fertilised
the lining of the womb and dead egg are shed from the body during a monthly bleed
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what hormones does the pituitary gland produce
FSH (follicle stimulating hormone), LH (luteinising hormone)
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ovaries produce what hormones
oestrogen, progesterone
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FSH
makes eggs mature in the ovaries, also stimulates the ovaries to produce oestrogen
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oestrogen
stimulates the lining of the womb to build up, inhibits the production of FSH
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pogesterone
keeps lining of the womb thick
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LH(luteinising hormone)
stimulates the release of the egg, inhibits oestrogen
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oral contraceptives(pill)
contain female hormones, particularly oestrogen which prevents the release of a egg and inhibits the production of FSH so no eggs mature
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one in six couples in the uk what?
struggle having a family if wanted
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some woman lack FSH
this means they do not stimulate the eggs in the ovaries but can take artificial FSH to stimulate the egg to mature and triggers oestrogen production
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IVF
in vitro fertilisation
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conception usually takes place in the
fallopian tube between the overies and the uterus. If they are damaged the eggs cant reach the uterus where a woman can get pregnant naturally.
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5 stages of IVF
1)fertility drugs mature eggs for collection 2)eggs are collected and placed in a petri dish solution 3)sample of semen collexted and mixed with the eggs 4)eggs checked to make sure fertilised and embryos developing 5)1 or 2 embryos placed in uterus
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What are embryos
tiny balls of cells
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Card 2

Front

a womans hormones are made in her pituitary glands and her ovaries control her menstrual cycle

Back

pituitary glands and overies

Card 3

Front

28 days

Back

Preview of the back of card 3

Card 4

Front

lining of the womb starts to thicken and a egg starts to mature in the overies

Back

Preview of the back of card 4

Card 5

Front

it is released by the overies

Back

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