EBK BIOLOGY
6th Edition
ISBN: 9780134819150
Author: Maier
Publisher: VST
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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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Which of the following causes the bleeding (menstruation) during the menstrual cycle?
Reduced release of oxytocin which causes the uterine muscles to relax
Increased release of estrogen (estradiol) from the ovaries that simulates the uterine muscles to contract
Reduced release of progesterone from the ovaries
Increased release of progesterone leading to blood clots
Why is it important to study or learn about the menstrual cycle?
Which of the following statements correctly describes the development of the endometrium during the menstrual cycle?
Select one:
A. Estrogen causes accelerated development of the endometrium during the follicle stage and then maintains the thickness of the endometrium during the luteal stage.
B. Progesterone causes the relatively slow development of the endometrium during the follicle stage and accelerates the thickening of the endometrium during the luteal stage.
C. Estrogen causes the relatively fast thickening of the endometrium during the follicular stage.
Progesterone maintains the thickness of the endometrium during the luteal phase.
D. Estrogen causes the relatively slow development of the endometrium during the follicular stage.
Progesterone causes accelerated thickening of the endometrium during the luteal phase.
Chapter 23 Solutions
EBK BIOLOGY
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 statements correctly describes the development of the endometrium during the menstrual cycle? Select one: a. Estrogen causes the relatively fast thickening of the endometrium during the follicular stage. Progesterone maintains the thickness of the endometrium during the luteal phase. b. Progesterone causes the relatively slow development of the endometrium during the follicular stage and then accelerates the thickening of the endometrium during the luteal phase. c. Estrogen causes accelerated development of the endometrium during the follicular stage and then maintains the thickness of the endometrium during the luteal phase. d. Estrogen causes the relatively slow development of the endometrium during the follicular stage. Progesterone causes accelerated thickening of the endometrium during the luteal phase.arrow_forward
- The graph above shows the estrogen and progesterone levels of an individual during a menstrual cycle of 28 days. The top light blue line indicates the progesterone levels and the bottom purple line indicates the estrogen levels. My guess is this individual is ovulating and will have high levels of FSH and LH though I'm not sure.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_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
- What does the graph show about estrogen and progesterone before and after ovulation? Please choose from one choice below. Before ovulation: Progesterone level is higher than estrogen; After ovulation: Estrogen level is higher than progesterone Before ovulation: Estrogen level is lower than progesterone; After ovulation: Progesterone level is higher than estrogen 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 progesteronearrow_forwardWhich of the following statements does NOT correctly describe the role of inhibin in the male reproductive system? Select one: a. Increased levels of inhibin suppress the production of follicle stimulating hormone. b. Low levels of inhibin result in decreased production of sperm. c. Sertoli cells produce sperm and secrete inhibin. d. Inhibin decreases the production of sperm.arrow_forwardWhich of the following processes takes place simultaneously during the menstrual cycle? Early follicular development and uterine lining High LH levels and ovulation Maximum LH release and menstruation (bleeding) Reconstruction of the corpus luteum and increased progesterone release from the ovaries Ovulation and menstruationarrow_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
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