BIOLOGY
12th Edition
ISBN: 9781260169614
Author: Raven
Publisher: RENT MCG
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Chapter 51, Problem 4S
Summary Introduction
To explain:
Whether the development of contraceptive that blocks
Introduction:
Human chorionic gonadotropin (
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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?
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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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- 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_forwardRemoval of gonads cannot be considered as a contraceptive option. Why?arrow_forwardIn positive mechanism, which of the following will happen if there is an increase production of estrogen in day 12 to 14 of the menstrual cycle? a/The level of released hormones cannot be determined b.There is a decrease release of estrogen in the ovaries c.There is an increase release of estrogen in the ovaries d.There is constant level of estrogen in the ovariearrow_forward
- The vessels marked in the diagram below, (A) function to decrease the temperature of blood flowing into the testis (B) are derived from the testicular vein (C) carries blood with a higher level of testosterone than LH or FSH (D) A and B (E) B and C (F) all of the abovearrow_forwardPlease can you explain leptin and how it works at the cellular level? Where is it stored? Can too much leptin affect a pregnancy in any way?arrow_forwardWhy is it possible for a woman to get pregnant when her Fallopian tube us blockedarrow_forward
- What causes an embryo to develop female external genitals?A. A high ratio of estradiol to testosteroneB. A high level of estradiol, regardless of testosteroneC. A high level of both estradiol and testosteroneD. A low level of testosterone, regardless of estradiolarrow_forwardA child 6 years old was recruited for a research process involving medical treatment. Who will consent for the child? explain why?arrow_forwardwhich of the following statement is NOT about follicle-stimulating hormones (FSH) in the male reproductive system? Select one: A. It is stimulated by GnRH and LH. B. It increases the production of inhibin. C. It is suppressed by increased levels of Testerone snd inhibin. D. It stimulates the Sertoli cells to produce spermarrow_forward
- Which of the following is not a mechanism on how contraceptive pills work to prevent pregnancy? A. thinning the endometrium to prevent implantation B. inhibition of follicular development and suppression of ovulation C. progesterone inhibits the sperm from penetrating through the cervix and female upper tract by making the cervical mucus unfriendly D. stimulates the production of high testosterone levelsarrow_forwardWhich row correctly identifies the function and a source of hCG, respectively? Select one: A. Function Source Stimulate Estrogen Ovary B. Function Source Stimulate FSH Anterior Pituitary C. Function Source Aid Implantation Uterus D. Function Source Maintains Corpus Luteum Trophoblast and Placentaarrow_forwardBased on the schematic below, illustrating the control of the hypothalamus and the pituitary gland by the ovarian hormones, how would you design a hormonal female contraceptive that keeps secretion of FSH and LH low in order to prevent ovulation?arrow_forward
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