Biology 2e
2nd Edition
ISBN: 9781947172517
Author: Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher: OpenStax
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Textbook Question
Chapter 43, Problem 2VCQ
Figure 43.15 Which of the following statements about hormone regulation of the female reproductive cycle is false?
- LH and FSH are produced in the pituitary, and estradiol and progesterone are produced in the ovaries.
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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 estradiol 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 estradiol are produced by the follicles. d. Secretion of GnRH by the hypothalamus is inhibited by low levels of estradiol but stimulated by high levels of estradiol.
Which 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 testosterone
Which 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.
Chapter 43 Solutions
Biology 2e
Ch. 43 - Figure 43.8 Which of the following statements...Ch. 43 - Figure 43.15 Which of the following statements...Ch. 43 - Figure 43.17 Which of the following statements...Ch. 43 - Which form of reproduction is thought to be best...Ch. 43 - Which form of reproduction can result from damage...Ch. 43 - Which form of reproduction is useful to an animal...Ch. 43 - Genetically unique individuals are produced...Ch. 43 - External fertilization occurs in which type of...Ch. 43 - Which term applies to egg development within the...Ch. 43 - Which term applies to egg development outside the...
Ch. 43 - Sperm are produced in the______ scrotum seminal...Ch. 43 - Most of the bulk of semen is made by the...Ch. 43 - Which of the following cells in spermatogenesis is...Ch. 43 - Which female organ has the same embryonic origin...Ch. 43 - Which female organ has an endometrial lining that...Ch. 43 - How many eggs are produced as a result of one...Ch. 43 - Which hormone causes Leydig cells to make...Ch. 43 - Which hormone causes FSH and LH to be released?...Ch. 43 - Which hormone signals ovulation? FSH LH inhibin...Ch. 43 - Which hormone causes the regrowth of the...Ch. 43 - Nutrient and waste requirements for the developing...Ch. 43 - Progesterone is made during the third trimester by...Ch. 43 - Which contraceptive method is 100 percent...Ch. 43 - Which type of short term contraceptive method is...Ch. 43 - Which hormone is primarily responsible for The...Ch. 43 - Major organs begin to develop during which part of...Ch. 43 - Which of the following is false? The endoderm,...Ch. 43 - During cleavage, the mass of cells: increases...Ch. 43 - Which of the following gives rise to the skin...Ch. 43 - The ribs form from the ___________ . notochord...Ch. 43 - Why is sexual reproduction useful if only half the...Ch. 43 - What determines which sex will result in offspring...Ch. 43 - What are the advantages and disadvantages of...Ch. 43 - Why would paired external fertilization be...Ch. 43 - Describe the phases of the human sexual response.Ch. 43 - Compare spermatogenesis and oogenesis as to timing...Ch. 43 - If male reproductive pathways are not cyclical,...Ch. 43 - Describe the events in the ovarian cycle leading...Ch. 43 - Describe the major developments during each...Ch. 43 - Describe the stages of labor.Ch. 43 - What do you think would happen if multiple sperm...Ch. 43 - Why do mammalian eggs have a small concentration...Ch. 43 - Explain how the different germ layers give rise to...Ch. 43 - Explain the role of axis formation in development.
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- Besides producing gametes (sperm and eggs), the primary male and female reproductive organs also produce sex hormones. The _____ and the pituitary gland control secretion of both.arrow_forwardFigure 18.12 Which of the following statements about the male reproductive system is false? a. The vas deferens carries sperm from the testes to the seminal vesicles. b. The ejaculatory duct joins the urethra. c. Both the prostate and the bulbourethral glands produce components of the semen. d. The prostate gland is located in the testes.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_forward
- Figure 43.8 Which of the following statements about the male reproductive system is false? The vas deferens carries sperm from the testes to the penis. Sperm mature in seminiferous tubules in the testes. Both the prostate and the bulbourethral glands produce components of the semen. The prostate gland is located in the testes.arrow_forwardMatch each hormone with its effect. oxytocin a. growth of facial hair testosterone b. uterus contracts LH c. LH, FSH are released GnRH d. surge causes ovulation FSH e. follicle develops HCG f. milk is produced prolactin g. corpus luteum is maintainedarrow_forwardWhich of the following is NOT one of the events leading to male sex-determination in humans? The Wolffian ducts are degraded. TDF and SF1 stimulate transcription of SOX9. Testosterone is produced, which stimulates the development of male reproductive structures and other male secondary characteristics. Mullerian-Inhibiting Hormone (MIH) is produced. The SRY gene is expressed to produce Testes-Determining Factor (TDF).arrow_forward
- Although 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_forwardWhich of the following statement does NOT describe the event that occurs if the ovum is not fertilized? Select one: A. Progesterone maintains the endometrium for the zygote. B. Low level of progesterone results in menstruation. C. The corpus luteum degenerates and stops producing estrogen and progesterone. D. GnRH, FSH, and LH levels begin to increase.arrow_forwardHypogonadism is a condition where the body does not produce enough testosterone. The symptoms of hypogonadism include infertility and a decrease in secondary sex characteristics. There are two types of hypogonadism. Primary hypogonadism is caused by problems stemming from the testicles, and secondary hypogonadism is caused by problems stemming from the hypothalamus or the pituitary gland. Individuals with hypogonadism are often treated with testosterone replacement therapy. What would be the result of testosterone injections in individuals with hypogonadism? Select one: a. GnRH LH Testosterone Decrease Decrease Increase b. GnRH LH Testosterone Decrease Decrease Decrease c. GnRH LH Testosterone Increase Increase Increase d. GnRH LH Testosterone Increase Increase Decreasearrow_forward
- Which of the following statements does NOT describe the role of progesterone in the female reproductive system? a. Triggers the release of the ovum b. Prevents smooth muscle contraction, thereby preventing premature birth c. Prevents the shedding of the endometrium d. Ensures that the endometrium is thick enough to support a fetilized eggarrow_forwardWhich 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 clotsarrow_forwardAccording to the graph below, estrogen will reach its peak concentration prior to ovulation. Predict the concentration of the other hormones by choosing low,medium, or high.arrow_forward
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