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Women with the condition known as polycystic ovary syndrome (PCOS) do not ovulate regularly - Edexcel - GCSE Biology Combined Science - Question 4 - 2019 - Paper 1
Question 4
Women with the condition known as polycystic ovary syndrome (PCOS) do not ovulate regularly. Women with PCOS can be treated using clomiphene therapy. Clomiphene th... show full transcript
Worked Solution & Example Answer:Women with the condition known as polycystic ovary syndrome (PCOS) do not ovulate regularly - Edexcel - GCSE Biology Combined Science - Question 4 - 2019 - Paper 1
Step 1
Step 2
Describe the changes that would happen inside the ovaries during the first five days of this treatment.
Answer
During the first five days of treatment with clomiphene therapy, the following changes occur inside the ovaries:
- Maturation of Ova: One or more ova will start to mature within the ovarian follicles.
- Follicle Development: The follicles containing the maturing ova begin to enlarge as they respond to emerging levels of FSH.
- Estrogen Release: As the follicles mature, they release estrogen, which plays a crucial role in the regulation of the menstrual cycle.
Step 3
Step 4
Explain the cause of this high level of progesterone on day 20 of the menstrual cycle.
Answer
The high level of progesterone on day 20 of the menstrual cycle can be explained as follows:
- Ovulation: This level indicates that ovulation has occurred, typically around day 14.
- Corpus Luteum Formation: After ovulation, the follicle transforms into the corpus luteum, which is responsible for producing progesterone.
- Function of Progesterone: Progesterone helps to maintain the lining of the uterus, preparing it for potential implantation of an embryo.