Biology
12th Edition
ISBN: 9781260494570
Author: Raven, Peter
Publisher: MCGRAW-HILL HIGHER EDUCATION
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Chapter 52, Problem 1IQ
Summary Introduction
To determine: The effects of the high level of estradiol and progesterone in the absence of pregnancy.
Introduction: Hormones can be defined as a chemical messenger secreted by some glands in the body. These hormones travel in the bloodstream and affect the different processes such as growth, development, and
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Identify 3 effects of progesterone on pregnancy.
Select one or more:
O a.
This causes the uterus to remain contracted after delivery to reduce blood
loss from the placental site
O b.
This is produced when the ovarian follicle that encloses the developing egg
forms a structure called the corpus luteum
O c.
This decreases bladder tone leading to an increased risk of urinary infection
O d.
This prepares the body for pregnancy. It acts as an appetite stimulant
Identify 1 effect of the hormone vasopressin in pregnancy.
Select one:
O a.
This has an important compensatory mechanism for restoring blood pressure
in hypovolaemic shock such as that which occurs during haemorrhage
O b.
Promotes the maintenance of the corpus luteum at the beginning of
pregnancy
O C.
Involved in thickening of the endometrium and other aspects of regulating the
menstrual cycle
Describe the role of progesterone in pregnancy including what produces it during pregnancy, its role in labor and delivery and how it effects at least two other body systems/tissues during pregnancy.
Need help
Identify the two agents that stimulate uterine contraction during labor and describe the proposed mechanisms that may initiate labor in humans
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Chapter 52 Solutions
Biology
Ch. 52.1 - Describe the events involved in fertilization.Ch. 52.1 - Prob. 2LOCh. 52.2 - Prob. 1LOCh. 52.2 - Prob. 2LOCh. 52.2 - Prob. 3LOCh. 52.3 - Prob. 1LOCh. 52.3 - Compare gastrulation in different animals.Ch. 52.3 - Name the extraembryonic membranes in amniotes.Ch. 52.4 - Prob. 1LOCh. 52.4 - Prob. 2LO
Ch. 52.4 - Prob. 3LOCh. 52.5 - Prob. 1LOCh. 52.5 - Explain the function of the organizer.Ch. 52.5 - Distinguish between primary and secondary...Ch. 52.6 - Describe the major developmental events in the...Ch. 52.6 - Explain the role of the placenta.Ch. 52.6 - Prob. 3LOCh. 52 - Data analysis Two different genes have mutant...Ch. 52 - Prob. 1IQCh. 52 - Prob. 1UCh. 52 - Which of the following plays the greatest role in...Ch. 52 - Gastrulation is a critical event during...Ch. 52 - Gastrulation in a mammal would be most similar to...Ch. 52 - Prob. 5UCh. 52 - Of the following processes, which occurs last? a....Ch. 52 - Which of the following would qualify as a...Ch. 52 - Prob. 1ACh. 52 - In the Spemann experiment, when the dorsal lip is...Ch. 52 - Suppose that a burst of electromagnetic radiation...Ch. 52 - Prob. 4ACh. 52 - Drug or alcohol exposure during which of the...Ch. 52 - Axis formation in amniotic embryos could be...Ch. 52 - Prob. 1SCh. 52 - You look up from your studying to see your dog,...Ch. 52 - Why doesnt a woman menstruate while she is...Ch. 52 - Spemann and Mangold were able to demonstrate that...
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- Discuss the critical effects of estrogen and progesterone during pregnancy.arrow_forwardWhat 2 ways can delivery of the placenta be managed during the 3rd stage? Select one or more: a. Conservative management b. Physiological management c. Active managementarrow_forwardcombination birth control pills contain estrogen and progestin. A typical pill packet contains 3 weeks of active hormones and 1 week of placebo pills. During the week of placebo pills, menstruation occurs. Use your knowledge of the hormonol control of the female reproductive system to: 1) Explain how the pills alter the feedback pathways of FSH and LH to prevent pregnancy. 2) Explain why menstruation occurs during the placebo weekarrow_forward
- Describe the differences between invasive placental implantation for species such as the cat and humans compared with non-invasive species such as sheep and horses.arrow_forwardUnderstanding the causes of infertility can be valuablein developing new birth control methods. Cite a type ofcontraceptive based on each of the following causes of infertility:(a) failure to ovulate due to a hormonal imbalance;(b) a large fibroid tumor that disturbs the uterine lining;(c) endometrial tissue blocking uterine tubes;(d) low sperm count (too few sperm per ejaculate).arrow_forwardUnderstanding the causes of infertility can be valuablein developing new birth control methods. Cite a type ofcontraceptive based on each of the following causes ofinfertility:(a) failure to ovulate due to a hormonal imbalance;(b) a large fibroid tumor that disturbs the uterine lining;(c) endometrial tissue blocking uterine tubes;(d) low sperm count (too few sperm per ejaculate).arrow_forward
- Suppose that in the near future, you are a prenatal care provider. In the most recent ultrasound checkup on the expecting mother, you unfortunately found that the fetus is suffering a neural tube defect in the form of anencephaly. Seeing as the mother is still in the 12th week of pregnancy or the 1st trimester, the pregnancy can still be terminated via medical means. How would you explain to the parents the situation they are in?arrow_forwardDraw two graphs that illustrate the uterine and ovarian cycles. Explain the functions and FSH, LH, estrogen, and progesterone, giving a step-by-step explanation of maturation of a follicle, ovulation, and the corresponding stages of development of the endometrium.arrow_forwardDiscuss the mechanism of action of the oxytocin? How does it facilitates uterine contraction especially to birthing mothers?arrow_forward
- A patient presents requesting hormonal contraception . She has been researching her options on the Web and has become confused by the large variety of OC pills available , including monophasic, multiphasic , and progesterone only . She asks how the pill prevents pregnancy and why the variety of preparations . Which of the following is the primary mechanism by which OCs prevent pregnancy ? Increasing cervical mucus viscosity Inhibiting serum follicle stimulating hormone (FSH) levels Inducing lymphocytic endometritis Inhibiting serum luteinizing hormone (LH ) levelsarrow_forwardIn-vitro fertilization occurs in the laboratory. The resulting embryos remain in a laboratory culture for up to six days before being transferred to the potential mother. If fertilization had occurred naturally (i.e., inside the female reproductive system instead of in-vitro), where would the embryo be and what developmental processes would it be undergoing during those first six days of development?arrow_forwarda. Using your diagram, illustrate the fertilization and implantation of the human egg. b. What are the approved contraceptives to prevent pregnancy? List at least 5 and describe or explain each purpose.arrow_forward
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