Saturday, 23 February 2013

3.9 understand the roles of oestrogen and progesterone in the menstrual cycle

The menstrual cycle
Oestrogen and progesterone are both hormones which effect the menstrual cycle.
Oestrogen: produced in the ovaries; thickens the womb lining; prompts the release of LH.
Progesterone: produced in the corpus lutiem; maintains the lining of the womb

5 comments:

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  2. The Biology Syllabus has changed…

    Here is a New blog for the 2017 Syllabus:

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  3. more at

    http://igcse-biology-notes.blogspot.hk/2017/06/39-understand-roles-of-oestrogen-and.html

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