Menstrual cycle

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FSH-follicle-stimulating hormone
Causes a follicle (egg and surrounding cells) to mature in one of the ovaries. Stimulates oestrogen production
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Oestrogen
Causes the lining of the uterus to thicken and grow. A high level stimulates an LH surge.
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LH- luteinising hormone
The LH surge stimulates ovulation at day 14 the follicle ruptures and the egg is released. Stimulates the remains of the follicle to develop into a structure called a corpus luteum- which secretes progesterone.
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Progesterone
Maintains the lining of the uterus. Prevents the production of FSH and LH. When the level of progesterone falls and there's a low oestrogen level, the uterus lining breaks down. Low progesterone level allows FSH to increase and then starts again.
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negative feedback
the
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Card 2

Front

Causes the lining of the uterus to thicken and grow. A high level stimulates an LH surge.

Back

Oestrogen

Card 3

Front

The LH surge stimulates ovulation at day 14 the follicle ruptures and the egg is released. Stimulates the remains of the follicle to develop into a structure called a corpus luteum- which secretes progesterone.

Back

Preview of the back of card 3

Card 4

Front

Maintains the lining of the uterus. Prevents the production of FSH and LH. When the level of progesterone falls and there's a low oestrogen level, the uterus lining breaks down. Low progesterone level allows FSH to increase and then starts again.

Back

Preview of the back of card 4

Card 5

Front

the

Back

Preview of the back of card 5

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