1. Estrogen levels are highest on day number? 2. LH levels are highest on day number? 3. How does the increase in the estrogen level correspond the change in thickness of the uterine lining in days

Biology 2e
2nd Edition
ISBN:9781947172517
Author:Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher:Matthew Douglas, Jung Choi, Mary Ann Clark
Chapter43: Animal Reproduction And Development
Section: Chapter Questions
Problem 2VCQ: Figure 43.15 Which of the following statements about hormone regulation of the female reproductive...
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1. Estrogen levels are highest on day number?

2. LH levels are highest on day number?

3. How does the increase in the estrogen level correspond the change in thickness of the uterine lining in days 1 through 10 of the menstrual cycle?

4. Compare the change in thickness of the uterine lining with change in progesterone amount for days 10-27.

5. Why is it logical for the level of FSH to fall greatly following ovulation?

6. What happens to the uterine lining between day 27 and day 1? What is this process called?

7. Why it makes sense that the levels of estrogen and progesterone are low in the blood of a female during menstruation?

8. Role of FSH in the menstrual cycle?

9. Role of estrogen in the menstrual cycle?

10. Role of progesterone in the menstrual cycle?

 

A. prepares the endometrial lining of the uterus to allow the fertilized egg to implant and helps to maintain the endometrium throughout pregnancy.

 

B. controls and prepares the lining of the uterus (the endometrium) for a potential during the first part of the cycle.

 

C. prior to ovulation, FSH levels will peak, signaling the ovary to release an egg. Once ovulation has occurred, the levels will return to or dip slightly below the baseline to allows smaller follicles to degenerate.

 

D. Day 13

 

E. stimulates development of the maturing ovarian follicle and controls ovum production.

 

F. increase in thickness of the endometrial lining, correspondingly.

 

G. Day 11

 

H. both the hormones estrogen and progesterone cause the endometrial lining to thicken to stabilize the uterus in preparation for a possible pregnancy. When an egg hasn’t been fertilized, the level of these hormones drop to shed off the endometrium coupled with mucous, the significance of which is to prepare the uterus for another potential pregnancy following menstruation.

 

I. Day 10

 

J. Luteal phase – Menstruation. The endometrial lining begins to shed off in the absence of fertilization.

 

K. Day 12

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