The diagram represents the human menstrual cycle - Leaving Cert Biology - Question 4 - 2019
Question 4
The diagram represents the human menstrual cycle.
(a) Does normal menstrual bleeding occur at A or at B?
(b) (i) Place the letter X on the diagram to indicate when... show full transcript
Worked Solution & Example Answer:The diagram represents the human menstrual cycle - Leaving Cert Biology - Question 4 - 2019
Step 1
Does normal menstrual bleeding occur at A or at B?
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Answer
Normal menstrual bleeding occurs at A.
Step 2
Place the letter X on the diagram to indicate when fertilisation is most likely to occur.
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Answer
X should be placed on any day(s) from 12 to 17, as this is when fertilisation is most likely to happen.
Step 3
Place the letter Y on the diagram to indicate when implantation is most likely to occur.
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Answer
Y should be placed on any day(s) from 12 to 20, since this range indicates when implantation is most likely.
Step 4
Name two hormones that have a role in the menstrual cycle.
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Answer
Oestrogen
Progesterone
Step 5
Give a cause of infertility in women.
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A common cause of infertility in women is failure to ovulate.
Step 6
Suggest a treatment to help a couple to have children in the case of infertility.
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One suggested treatment is IVF (In Vitro Fertilization).
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