Pearson eText Biology: Science for Life -- Instant Access (Pearson+)
6th Edition
ISBN: 9780135214084
Author: Colleen Belk, Virginia Maier
Publisher: PEARSON+
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Chapter 23, Problem 2GFO
Summary Introduction
To analyze:
If there is any good evidence to support menstrual synchrony.
Introduction:
The menstruation cycle is referred to as the changes taking place in the body of the woman. The menstruation cycle is highly regulated starting from menstruation or the bleeding days to the next menstruation.
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The increased release of progesterone by the corpus luteum inhibits (decreases) the release of FSH and LH. Based on your knowledge of the menstrual cycle, what will be the effect of this feedback loop?
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Before ovulation: Progesterone level is higher than estrogen; After ovulation: Estrogen level is higher than progesterone
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Before ovulation: Estrogen level is higher than progesterone; After ovulation: Progesterone level is higher than estrogen
Before ovulation: Progesterone level is higher than estrogen; After ovulation: Estrogen level is lower than progesterone
Chapter 23 Solutions
Pearson eText Biology: Science for Life -- Instant Access (Pearson+)
Ch. 23 - Why can two cells with the same DNA have different...Ch. 23 - Prob. 2LTBCh. 23 - Add labels to the figure that follows, which...Ch. 23 - Prob. 4LTBCh. 23 - Prob. 5LTBCh. 23 - Prob. 6LTBCh. 23 - Which hormone helps prepare the uterus for...Ch. 23 - Prob. 8LTBCh. 23 - Prob. 9LTBCh. 23 - Prob. 10LTB
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- Figure 18.17 Which of the following statements about hormone regulation of the female reproductive cycle is false? a. LH and FSH are produced in the pituitary, and estrogen and progesterone are produced in the ovaries. b. Estradiol and progesterone secreted from the corpus luteum cause the endometrium to thicken. c. Both progesterone and estrogen are produced by the follicles. d. Secretion of GnRH by the hypothalamus is inhibited by low levels of estrogen but stimulated by high levels of estrogen.arrow_forwardFigure 43.17 Which of the following statements about the menstrual cycle is false? Progesterone levels rise during the luteal phase of the ovarian cycle and the secretory phase of the uterine cycle. Menstruation occurs just after LH and FSH levels peak. Menstruation occurs after progesterone levels drop. Estrogen levels rise before ovulation, while progesterone levels rise after.arrow_forwardWhich of the following is the result of sympathetic activation during the male sexual response? Relaxation of smooth muscle cells in the penis Engorgement and erection Secretion of lubricating fluids Emission / Ejaculationarrow_forward
- Is the female in this example pregnant? How do you know? Explain how the graph would change if the opposite was true (be sure to include how the differences occur).arrow_forwardWrite the important events that happen among the stages of menstrual cycle inside the table below.fill up the table by identifying which stage of menstrual cycle do each nine events that is already given below belong:arrow_forwardAlthough the most effective form of an oral contraceptive for woman contain estrogen and progestin, some birth control pills contain a small dose of progestin-only. This is because there are many risks and side effects. Which of the following statements is NOT a reason for using a progestin-only oral contraceptive? Select one: A. progesterone maintains the corpus luteum as corpus luteum release a large amount of progesterone and estrogen. B. progesterone suppresses the maturation of follicles, thereby preventing ovulation of a mature ovum. C. progestin-only oral contraceptives prevent the production of FSH and LH in the anterior pituitary. D. progesterone suppresses the production of GnRH in the hypothalamus.arrow_forward
- Some couple practice natural family planning (also known as the rhythm method of birth control), which involves abstaining from sexual intercourse during the time that a woman can become pregnant in her menstrual cycle. The egg only survives in the fallopian tube from 24 hours after ovulation, so conception can only happen during a 24-hour period each month. However, this form of contraceptive is very unreliable and is not recommended for couples who are actively trying to avoid pregnancy. Which of the following is NOT a reason why this form of birth control is unreliable? A. Sperm can survive in the fallopian tubes for 3 to 5 days. B. Ovulation can be affected by stress or illness. C. Women always ovulate on the same day of their menstrual cycle every month. D. It is difficult to predict exactly when in her cycle a woman ovulates.arrow_forwardA couple would like to conceive a child. When should timed intercourse occur? immediately before menstruation during menstruation about 2 weeks before menstruation Q 13 of 15 immediately after menstruationarrow_forwardFemale Reproductive System Menstruation is triggered by: O a decrease of estrogen and progesterone O a rise in FSH an increase of estrogen and progesterone O a spike in LHarrow_forward
- Give typing answer with explanation and conclusionarrow_forwardWhich of the following statement correctly describe the role of androgen in the male reproductive system? Select one: A. LH stimulates the Sertoli cell to produce inhibin and to start spermatogenesis. B. Increased levels of inhibin released by the interstitial cells result in lower levels of FSH and testosterone. C. Increased levels of testosterone feedbacks negatively to the anterior pituitary and hypothalamus. D. GnRH is released by the anterior pituitary and stimulates the release of FSH and LH.arrow_forwardWhich of the following statements is NOT true concerning the hormonal control over the male reproductive system? These hormones are involved in a negative feedback relationship The hypothalamus secretes a hormone called gonadotropin-releasing hormone Luteinizing hormone controls the production of sperm in the seminiferous tubules Follicle-stimulating hormone and luteinizing hormone are present in both males and females The interstitial cells produce testosteronearrow_forward
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