Human Physiology: An Integrated Approach (8th Edition)
8th Edition
ISBN: 9780134605197
Author: Dee Unglaub Silverthorn
Publisher: PEARSON
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Textbook Question
Chapter 26.2, Problem 6CC
The gametes in a newborn male are at what stage of development? Is it the same in a newborn female?
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Oogenesis in the female results in one functional gamete—the egg, or ovum. What other cells are produced? What is the significance of this rather wasteful type of gamete production—that is, production of a single functional gamete instead of four, as seen in males?
Why does external fertilization not require the involvement of gametes?
What is the most significant difference in the process of gametogenesis comparing oogenesis with spermatogenesis?
Chapter 26 Solutions
Human Physiology: An Integrated Approach (8th Edition)
Ch. 26.1 - Name the male and female gonads and gametes.Ch. 26.1 - Where in a target cell would you expect to find...Ch. 26.1 - Prob. 3CCCh. 26.1 - Which sex will a zygote become if it inherits only...Ch. 26.1 - If the testes are removed from an early male...Ch. 26.2 - The gametes in a newborn male are at what stage of...Ch. 26.2 - Compare the amount of DNA in the first polar body...Ch. 26.2 - How many gametes are formed from one primary...Ch. 26.2 - Prob. 9CCCh. 26.2 - Prob. 10CC
Ch. 26.2 - Prob. 11CCCh. 26.3 - What do Sertoli cells secrete? What do...Ch. 26.3 - Prob. 13CCCh. 26.3 - Which cells of the testes have receptors for FSH?...Ch. 26.3 - Prob. 15CCCh. 26.4 - Name the phases of the ovarian cycle and the...Ch. 26.4 - Prob. 17CCCh. 26.4 - Prob. 18CCCh. 26.4 - On what day of the menstrual cycle will a woman...Ch. 26 - Match each of the following items with all the...Ch. 26 - The Y chromosome contains a region for male sex...Ch. 26 - List the functions of the gonads. How do the...Ch. 26 - Define each of the following terms and describe...Ch. 26 - Trace the anatomical routes to the external...Ch. 26 - Prob. 6RQCh. 26 - Prob. 7RQCh. 26 - List and give a specific example of the various...Ch. 26 - Prob. 9RQCh. 26 - Prob. 10RQCh. 26 - Diagram the menstrual cycle, distinguishing...Ch. 26 - Prob. 12RQCh. 26 - Define and relate each of the following terms in...Ch. 26 - Compare the actions of each of the following...Ch. 26 - Prob. 15RQCh. 26 - Discuss the roles of each of the following...Ch. 26 - Prob. 17RQCh. 26 - Prob. 18RQCh. 26 - An XY individual inherits a mutation that results...Ch. 26 - Prob. 20RQCh. 26 - The following graph shows the results of an...
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- How does the role of meiosis in gamete production differ between organisms with a diploid-dominant life cycle and organisms with an alternation of generations life cycle?arrow_forwardWhere does meiosis occur in males? Why are each of these stages important in sexual reproduction? Where does meiosis occur in males?arrow_forwardFertilization is the fusion of haploid gametes, ovum and spermatozoon, to form a diploid zygote. Discuss physiologic mechanisms in the male and the female that make sure that indeed only one sperm fertilizes a single eggarrow_forward
- What is the role of meiosis? In what ways does meiosis give rise to different genetic combinations in gametes?arrow_forwardFor which of the following is the number the same in humanmales and females?(A) interruptions in meiotic divisions(B) functional gametes produced by meiosis(C) meiotic divisions required to produce each gamete(D) different cell types produced by meiosisarrow_forwardConcerning the sexchromosomes of the XYsystem which type of gametedo the male and the femaleindividuals respectivelyproduce?arrow_forward
- Describe the process of ovulation, the hormone involved and what is released into the Fallopian tube (It isn’t just the oocyte) . At what stage of meiosis is the secondary oocyte? What is the life expectancy of the secondary oocyte?arrow_forwardIn a human secondary spermatocyte, if the chromatids of one chromosome failed to separate during the second meiotic division, how many chromosomes would be in each of the resulting gametes?arrow_forwardWhy is it risky for a haploid sperm cell to go through diffrencition after meiosis?arrow_forward
- During gametogenesis, from a single germ cell (oocyte/spermatocyte), males produce O4;1 O 4;4 O 1;1 O 1;4 gamete(s) and females producearrow_forwardHow do the haploid cells arising from oogenesis differ structurally and functionally from those arising from spermatogenesis?arrow_forwardIf one follows 50 primary oocytes in an animal through theirvarious stages of oogenesis, how many secondary oocytes wouldbe formed? How many first polar bodies would be formed? Howmany ootids would be formed? If one follows 50 primary spermatocytes in an animal through their various stages of spermatogenesis, how many secondary spermatocytes would beformed? How many spermatids would be formed?arrow_forward
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