Human Physiology: An Integrated Approach (8th Edition)
8th Edition
ISBN: 9780134605197
Author: Dee Unglaub Silverthorn
Publisher: PEARSON
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Textbook Question
Chapter 26.1, Problem 5CC
If the testes are removed from an early male embryo, why does it develop a uterus and Fallopian tubes rather than the normal male accessory structures? Will the embryo have male or female external genitalia? Explain.
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Where in the reproductive tract of the female does fertilization normally occur? What is the diagnostic medical term when implantation occurs outside of this site?
Describe the development of an oocyte from primordial follicle to when it is released at ovulation. How do hormones contribute to this progression? Describe the development of a spermatogonia to a spermatozoa. How do hormones contribute to this progression? What is the function of Sertoli and Leydig cells?
In cryptorchidism, one or both testes of an infant have not descended into the scrotal sac by the first birthday. In these cases, the testes are surgically descended. Why must the testes be descended if the later fertility of the child is to be maintained?
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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- Which oocyte stage is ovulated? What happens to it if it encounters a sperm cell there? What happens if it does not meet up with sperm?arrow_forwardOvulation releases _________. a. the corpus luteum b. a primordial follicle c. a primary oocyte d. a secondary oocyte and first polar bodyarrow_forwarda) Do any sperm enter the pelvic cavity of the female? Why or why not7 b) What is an ectopic pregnancy, and how can it happen? c) Put the following vestibular-perinea! structures in their proper order from the anterior to the posterior aspect: vaginal orifice,anus, external urethral opening, and clitoris.arrow_forward
- The left testis of a newborn baby failed to descend into his scrotal sac.For some reason, the condition was not treated, and the testis remainedin that position until after puberty. Select the observation consistentwith the fate of the left testis after puberty.(1) normal testosterone secretion(2) no interstitial cells in the testis(3) no sustentacular cells in the testis(4) no spermatogonia in the testis(5) increased number of interstitial cells(6) normal LH secretiona. 1 b. 1,2,3,4 c. 1,2,3,6 d. 1,4,6 e. 4,6arrow_forwardIf fertilization occurs, the corpus luteum continues to produce hormones under the direction of Human Chorionic Gonadotrophin (HCG), which is produced by the embryo. By the third month, what begins to produce estradiol and progesterone?arrow_forwardGross Anatomy of the Human Male Reproductive System a) List the two main functions of the testis. b) Why are the testes located in the scrotum rather than inside the ventral body cavity? c) An enlarged prostate is associated with a number of disorders, including prostatitis and prostate cancer. Describe the diagnostic exam used to detect an enlarged prostate.arrow_forward
- Select the best answer or answers from the choices given: Which will occur as a result of nondescent of the testes? (a) male sex hormones will not be circulated in the body, (b) sperm will have no means of exit from the body, (c) inadequate blood supply will retard the development of the testes, (d) viable sperm will not be produced.arrow_forwardName the process of rupture of follicle and release of ovum from the ovary.arrow_forwardWhat happens if an oocyte combines with sperm? Describe the processes involved in implantation. Mention what is occurring, where it is occurring, and any significant hormones involved. How does the zygote make its way through the uterine tube? Women who smoke cigarettes have an increased risk of ectopic pregnancy because the chemicals they absorb paralyze cilia all through the body. Explain.arrow_forward
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