Human Physiology
15th Edition
ISBN: 9781259864629
Author: Fox, Stuart Ira
Publisher: Mcgraw-hill Education,
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Chapter 20, Problem 14CP
Summary Introduction
To review:
The two agents that stimulate labor contractions along with the mechanisms that initiate labor.
Introduction:
Gestation period is the time duration of the fetus development inside the female body. The strong contractions of the uterus are required in order to expel the fetus in a sequence of events and is termed as labor. Various chemicals are responsible for the stimulation of the uterine contractions.
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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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- What is the expected effect on reproduction on an individual with hormone levels shown above? Identify two physiological changes that will not occur due to the atypical hormone levels shown above. The graph above shows the estrogen and progesterone levels of an individual during a menstrual cycle of 28 days. The top light blue line indicates the progesterone levels and the bottom purple line indicates the estrogen levels. This individual is in luteal phase.This individual can be expected to have low levels of FSH and LH.arrow_forwarda) Give a detailed account of the hormonal control of the human menstrual cycle. Briefly explain the similarities and differences between oogenesis and spermatogenesis. b)arrow_forwardDiscuss the mechanism of action of the oxytocin? How does it facilitates uterine contraction especially to birthing mothers?arrow_forward
- Which of the following is required for successful fetal development after the egg has been fertilized? a) That the corpus luteum remains throughout the pregnancy b) Production of estrogen (estradiol) and progesterone from the placenta c) Release of hCG (human chorionic gonatotropin) from the placentaarrow_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_forwardhCG, estrogen and progesterone are hormones that are secreted throughout pregnancy. Answer the following questions about these hormones. 1) What structure initially secretes estrogen & progesterone? 2)What structure takes over the role of secreting hCG, estrogen & progesterone in the second and third trimesters?arrow_forward
- Fertilization: a) Briefly describe the process of fertilization in humans, b) identifying key aspects that stop sperms from different species to fertilize human oocytes, and c) identifying also key aspects that prevent polyspermy.arrow_forwardIs a reaction mechanism altered by the presence of acatalyst? Explainarrow_forwardEach of the four female reproductive hormones ( FSH, LH, estrogen & progesterone) have specific roles or function to complete to ensure a successful pregnancy. While these hormones may be released at a different time during an average 28-day cycle there are key times in the cycle where their release is critical in ensuring a successful pregnancy. Which of the following list the order of hormonal release from 0-28 requirements to support the fertilization and implantation of the ovum? Select one: A. FSH, estrogen, LH, progesterone. B. FSH, estrogen, progesterone, LH C. LH, FSH, estrogen, progesterone D. FSH, LF, estrogen, progesteronearrow_forward
- 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) Progesteronearrow_forwardSpermatogenesis and oogenesis both involve meiosis but differ in significant ways. One of those differences include what? A) Cytokinesis is unequal in spermatogenesis B) Production of sperm is continuous; in humans, and the number of future egg cells is set at birth C) Oogenesis is an uninterrupted sequence, but there are long delays in spermatogenesis D) All of the abovearrow_forwardDefine external fertilisation. Mention its disadvantages.arrow_forward
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