BIOLOGY
12th Edition
ISBN: 9781260169614
Author: Raven
Publisher: RENT MCG
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Chapter 51, Problem 3S
How are the functions of FSH and LH similar in male and female mammals? How do they differ?
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How are the functions of FSH and LH similar in male and female mammals? How do they differ?
1.) A.) Contrast the action of FSH in males and females. In your answer, consider how FSH regulates the production of estrogen and testosterone
B.) Efforts to develop a male oral contraceptive have focused on drugs that block the effects of FSH. Justify why it would be undesirable to block the effects of LH.
1.This will stimulate the ovary to start the development of an egg cell and the secretion of estrogen.
A. Follicle-stimulating hormone (FSH)
B. Gonadotropin-releasing hormone (GnRH)
C. Luteinizing hormone (LH)
D. Prolactin
2. Which of the following is the negative feedback effect of ovaries losing sensitivity to FSH and LH?
A. higher fertility rate
B. an increase in production of estrogen.
C. irregular cycle of ovulation and menstruation
D. increase follicular development and ovulation.
Chapter 51 Solutions
BIOLOGY
Ch. 51.1 - Prob. 1LOCh. 51.1 - Prob. 2LOCh. 51.1 - Prob. 3LOCh. 51.2 - Prob. 1LOCh. 51.2 - Prob. 2LOCh. 51.3 - Prob. 1LOCh. 51.3 - Prob. 2LOCh. 51.3 - Prob. 3LOCh. 51.4 - Prob. 1LOCh. 51.4 - Explain ovulation and the female reproductive...
Ch. 51.4 - Prob. 3LOCh. 51.5 - Prob. 1LOCh. 51.5 - Describe causes of infertility.Ch. 51 - Prob. 1DACh. 51 - Why might it be adaptive for an individual to be...Ch. 51 - Prob. 2IQCh. 51 - Why do you think the brain is affected when the...Ch. 51 - You have discovered a new organism living in tide...Ch. 51 - Prob. 2UCh. 51 - Prob. 3UCh. 51 - Which of the following structures is the site of...Ch. 51 - FSH and LH are produced by the a. ovaries. b....Ch. 51 - Prob. 6UCh. 51 - Mutations that affect proteins in the acrosome...Ch. 51 - In humans, fertilization occurs in the____, and...Ch. 51 - The testicles of male mammals are suspended in the...Ch. 51 - Prob. 1ACh. 51 - Which of the following is a major difference...Ch. 51 - Prob. 3ACh. 51 - Internal and external fertilization differ in that...Ch. 51 - Prob. 1SCh. 51 - Why do you think that amphibians and many fish...Ch. 51 - How are the functions of FSH and LH similar in...Ch. 51 - Prob. 4SCh. 51 - Why are all parthenogenic parents female?
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- Fraternal twins are nonidentical siblings that form when two eggs nature are released, and are fertilized at die same time. Explain why an unusually high level of FSH raises the likelihood of fraternal twins.arrow_forwardThe function of the placental hormone human placental lactogen (hPL) is to ________. prepare the breasts for lactation nourish the placenta regulate the menstrual cycle all of the abovearrow_forward1. Predict the fertilization problems if the Ca+2 wave gets blocked?2. One of the goals of modern-day pharmacology is to develop a male contraceptive.Go through the steps of fertilization and determine what steps do you think it might be possible to block pharmacologically in order to produce such a contraceptive for males?arrow_forward
- 77. The type of feedback that estrogen and progesterone are exerting on the gonadotropins after month 1 in this figure is ________________ and after month 2, _______________ is secreting these two hormones. A. Positive ; growing fetus B. Positive ; placenta C. Positive ; corpus luteum D. Negative ; growing fetus E. Negative ; corpus luteum F. Negative ; placentaarrow_forward2. a person is xy, has sry gene, is androgen insensitive, has male internal anatomy but female external anatomy. which of the following is caused by a lack of androgen receptors? a. xy chromosomes b. elevated plasma androgens c. lack of uterus d. presence of testesarrow_forwardWhy does continued breastfeeding decrease the chance of pregnancy? (Hint: Think about the effect the breastfeeding hormones have on estrogens and progesterone.)?arrow_forward
- Birth control pills commonly provide excess progesterone that serves to inhibit (suppress) the actions of FSH and LH through a negative feedback loop. Given the role these hormones (FSH and LH) play, how could this feedback loop prevent a woman from becoming pregnant?arrow_forward1The gonadotropins are hormones produced by the anterior pituitary gland and affect both male and female reproductive cycles; they are, ___?____and ____?___.arrow_forwardHelp with questions 1 and 2 1.) Which of the following rows correctly matches the hormone with its function? Row| Hormone |Function A. FSH | stimulates a follicle to maturity B. estrogen | causes a mature follicle to release an ovum C. LH. | inhibits the release of FSH D. progesterone | thickens the endometrial wall before ovulation A. A B. B C. C D. D 2.) Environmental contaminants have been found in the____ of pregnant women and the ____ of nursing mothers. The statement above is completed by the information in row ______ Row i. ii A. Placentas. ovaries B. fallopian tubes Uteri C. umbilical cords. breast milk D. Uteri. Vaginasarrow_forward
- Which statement about menopause is most correct? A. Menopause has to be adaptive because life-history theory predicts that women should not outlive their reproductive capacity, so menopause must have some function. B. Menopause has to be adaptive because humans, not chimpanzees, experience menopause, and humans are evolutionarily more advanced than chimps. C. Several hypotheses for menopause as an adaptation have been proposed, but more evidence is necessary to support any one of them. D. Several hypotheses for menopause as an adaptation have been proposed, but they have not been tested.arrow_forwardGestation of an animal can be as long as over two years (rhinoceros – 840 days) so, how does the developing embryo/fetus survive within the uterus until parturition?arrow_forwardWhich of these functions explains the role of hormones in the reproductive systems? A. Influence female sex traits B. Regulates body temperature. C. Controls the calcium level in the blood. D. Enables the body to produce more antibodies 4. Which of these reproductive parts explains the role of progesterone in the onset of puberty? A. Penis B. Uterine lining C. Oviduct D. Hypothalamusarrow_forward
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