Answer the following questions in relation to the typical human female menstrual cycle - Leaving Cert Biology - Question b - 2016
Question b
Answer the following questions in relation to the typical human female menstrual cycle.
(i) State one change that occurs, and the approximate day(s) of the cycle on... show full transcript
Worked Solution & Example Answer:Answer the following questions in relation to the typical human female menstrual cycle - Leaving Cert Biology - Question b - 2016
Step 1
State one change that occurs, and the approximate day(s) of the cycle on which it occurs 1. in the endometrium.
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Answer
In the endometrium, one change that occurs is that it breaks down (sheds) during days 1 to 5 of the menstrual cycle.
Step 2
State one change that occurs, and the approximate day(s) of the cycle on which it occurs 2. in the ovary.
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In the ovary, one change that occurs is the maturation of the follicle (or ovum/egg) during days 1 to 14 of the menstrual cycle.
Step 3
Where in the body are FSH and LH produced?
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FSH (Follicle Stimulating Hormone) and LH (Luteinizing Hormone) are produced in the pituitary gland.
Step 4
State one role of each of these hormones in the cycle.
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FSH stimulates the follicle (egg) to develop in the ovary, while LH stimulates the ovary to produce progesterone and triggers ovulation.
Step 5
Name two other hormones that play a role in the cycle.
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Two other hormones that play a role in the menstrual cycle are oestrogen and progesterone.
Step 6
Stating clearly which of the two hormones you have chosen from (iv), give a function in the cycle of that hormone.
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Answer
Oestrogen plays a crucial role in building up the endometrium in preparation for potential implantation of an embryo.
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