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, Problem 16RQ
Discuss the roles of each of the following hormones in pregnancy, labor and delivery, and mammary gland development and lactation:
- (a) human chorionic gonadotropin
- (b) luteinizing hormone
- (c) human placental lactogen
- (d) estrogen
- (e) progesterone
- (f) relaxin
- (g) prolactin
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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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- What structural features of the endometrium and myometrium contribute to their functions?arrow_forwardDescribe the function of each of the following hormones in the uterine and ovarian cycles: GnRH, FSH, LH, estrogens, progesterone, and inhibin.arrow_forwardhCG, estrogen and progesterone are hormones that are secreted throughout pregnancy. Answer the following questions about these hormones.1) Identify the structure that initially secretes hCG 2) Describe the function of hCG and identify the trimester where the hCG level is the highest 3) What are the roles of estrogen & progesterone in pregnancy 4) What structure initially secretes estrogen & progesterone? 5) What structure takes over the role of secreting hCG, estrogen & progesterone in the second and third trimesters?arrow_forward
- What would happen if human chorionic gonadotropin levels did not rise adequately during pregnancy?arrow_forwardWhat would be the external genital appearance of a mammal exposed to high levels of both androgens and estrogens during early development? What if it were exposed to low levels of both?arrow_forwardIf a woman 7.5 months pregnant is found to have a marked decrease in plasma estrogen but normal plasma progesterone for that time of pregnancy, what would you conclude?arrow_forward
- Suppose an auto accident had fractured a pregnant woman’s sphenoid bone and severed the pituitary stalk. Assuming that she nevertheless carried the pregnancy to full term,how might this accident affect her labor contractions? How might it affect her ability to breast-feed? Explain both effects.arrow_forwardIf 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) Progesteronearrow_forwardWhat are two important differences between the processes of spermatogenesis and oogenesis in animals?arrow_forward
- Describe a positive feedback mechanism that contributes to ovarian cycling. If the ovulated oocyte becomes fertilized, what causes ovarian cycling to stop for the duration of the pregnancy? On approximately what date(s) would Anita have her highest estrogen levels On what date(s) would Anita most likely have a successful fertilization?arrow_forward77. 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_forwardImplantation of a blastocyst does not always happen. Approximately how many days after fertilization may implantation of a blastocyst occur?arrow_forward
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