Human Physiology
15th Edition
ISBN: 9781259864629
Author: Fox, Stuart Ira
Publisher: Mcgraw-hill Education,
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Chapter 20, Problem 31RA
Summary Introduction
To review:
1. The sequence of events by which the male accessory sex organs and external genitalia are produced.
2. The condition when a male embryo lacks receptor proteins for testosterone and enzyme 5α-reductase.
Introduction:
Hormones are designated as chemical messengers in the body. The hormones play various vital roles in the life of an organism. During the embryonic development, the proper development of the embryo is also assured by the hormones. There are various hormones that are termed as sex-hormones and they decide the specific sexual characters in the body.
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Students have asked these similar questions
Describe the development of reproductive organs in a fetus of each gender. Which
genes, gene products, and hormones are involved in the sex differences? Which sex-
related hormones are circulating in high concentrations in a pregnant woman
compared to a nonpregnant woman? Do these hormones cross the placenta (if you
are uncertain, consider hormone chemical class relative to membrane permeability to
make an educated guess)? Assuming these hormones do cross the placenta, how do
they affect the hormonal environment inside the fetus, and how does this relate to
fetal reproductive development?
Which of the following is TRUE about the mechanism of sex determination?
A) The product of the SRY gene converts the bipotential gonads into testes.
B) The development of an ovary is conditioned by the presence of two X chromosomes.
(C) Testosterone promotes the degeneration of the Mullerian duct.
D.
The ovary produces a Wolffian inhibition factor that causes the Wolffian duct to degenerate.
E) The "feminization" of accessory sex orgarts is promoted by the ovary.
If the ovum is not fertilized, the corpus luteum regresses, and the endometrium sloughs off to result in the first day of menstrual bleeding. The latter event would be duplicated, even if fertilization occurred, if receptors for which of the following hormones were occupied by an antagonist?
A) Dehydroepiandrosterone
B) Estradiol
C ) Estriol
D) Estrone
E) Progesterone
Chapter 20 Solutions
Human Physiology
Ch. 20 - Define the terms diploid and haploid, and explain...Ch. 20 - Explain how the chromosomal sex determines whether...Ch. 20 - List the male and female accessory sex organs and...Ch. 20 - Describe the abnormalities characteristic of...Ch. 20 - Prob. 3aCPCh. 20 - Prob. 3bCPCh. 20 - Prob. 4aCPCh. 20 - Prob. 4bCPCh. 20 - Prob. 4cCPCh. 20 - Prob. 5aCP
Ch. 20 - Prob. 5bCPCh. 20 - Prob. 6aCPCh. 20 - Prob. 6bCPCh. 20 - Describe the roles of FSH and testosterone in...Ch. 20 - Prob. 8aCPCh. 20 - Prob. 8bCPCh. 20 - Prob. 9aCPCh. 20 - Prob. 9bCPCh. 20 - Describe the changes that occur in the ovary and...Ch. 20 - Describe the formation, function, and fate of the...Ch. 20 - Prob. 11aCPCh. 20 - Explain the significance of negative feedback...Ch. 20 - Prob. 12aCPCh. 20 - Prob. 12bCPCh. 20 - List the fetal and maternal components of the...Ch. 20 - Prob. 13bCPCh. 20 - Prob. 14CPCh. 20 - Prob. 15CPCh. 20 - Prob. 1RACh. 20 - Prob. 2RACh. 20 - Prob. 3RACh. 20 - Prob. 4RACh. 20 - Prob. 5RACh. 20 - Prob. 6RACh. 20 - Prob. 7RACh. 20 - Prob. 8RACh. 20 - Which of these statements is true?
Ch. 20 - Prob. 10RACh. 20 - Prob. 11RACh. 20 - Prob. 12RACh. 20 - Prob. 13RACh. 20 - Prob. 14RACh. 20 - Prob. 15RACh. 20 - The contents of the birth control pill
Ch. 20 - Which of the following statements regarding...Ch. 20 - Prob. 18RACh. 20 - Prob. 19RACh. 20 - Prob. 20RACh. 20 - Prob. 21RACh. 20 - Prob. 22RACh. 20 - Prob. 23RACh. 20 - Prob. 24RACh. 20 - Prob. 25RACh. 20 - Prob. 26RACh. 20 - Prob. 27RACh. 20 - Describe the steps of oogenesis when fertilization...Ch. 20 - Prob. 29RACh. 20 - Prob. 30RACh. 20 - Prob. 31RACh. 20 - Prob. 32RACh. 20 - Prob. 33RACh. 20 - Prob. 34RACh. 20 - Prob. 35RACh. 20 - Prob. 36RACh. 20 - Prob. 37RACh. 20 - Prob. 38RACh. 20 - Prob. 39RACh. 20 - Prob. 40RACh. 20 - Prob. 41RACh. 20 - Prob. 42RACh. 20 - Prob. 43RACh. 20 - Prob. 44RA
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