ANATOMY & PHYSIOLOGY: AN INTEGRATIVE APP
3rd Edition
ISBN: 9781266163654
Author: McKinley
Publisher: MCG
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Chapter 29, Problem 4CAL
Summary Introduction
Introduction:
Oxytocin hormone is regulated by the positive feedback mechanism. Hypothalamus secretes oxytocin that is stored and released by the posterior pituitary gland. The release of oxytocin occurs during the time of uterine contraction and in milk-let down processes. The secretion of oxytocin hormone is regulated by a positive feedback mechanism.
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During the first trimester, hCG produced from the chorion maintains the corpus luteum. What is the purpose of maintaining the corpus luteum?
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a. The corpus luteum produces relaxin, which thickens the endometrium.
b. The corpus luteum ensures that the endometrium does not break down during the first trimester.
c. The corpus luteum supports the formation of the placenta.
d. The chorion forms the fetal part of the placenta, and the corpus luteum supports the maternal part of the placenta.
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The physician determines that Ashley is in her twentieth week of pregnancy. Which of the following best describes the development of the fetus at this time (refer to table 29.3)? a. The crown–rump length is 19 centimeters. b. The heart and lungs have fully developed, but the GI tract has yet to form. c. The testes have descended into the scrotum. d. The average weight of the fetus at this time is about 2.5 kilograms.
Chapter 29 Solutions
ANATOMY & PHYSIOLOGY: AN INTEGRATIVE APP
Ch. 29.1 - Prob. 1LOCh. 29.1 - What distinguishes the pre-embryonic period from...Ch. 29.2 - Prob. 2LOCh. 29.2 - Prob. 3LOCh. 29.2 - Prob. 1WDTCh. 29.2 - Prob. 2WDLCh. 29.2 - Prob. 3WDLCh. 29.2 - Prob. 4LOCh. 29.2 - Prob. 5LOCh. 29.2 - How many cells are present initially in the...
Ch. 29.2 - Prob. 5WDLCh. 29.2 - Prob. 6LOCh. 29.2 - Prob. 7LOCh. 29.2 - Prob. 6WDLCh. 29.2 - Prob. 7WDLCh. 29.2 - Prob. 8LOCh. 29.2 - Prob. 9LOCh. 29.2 - What are the two cell layers of the bilaminar...Ch. 29.2 - Which cell layers give rise to each of the three...Ch. 29.2 - Prob. 10LOCh. 29.2 - Prob. 11LOCh. 29.2 - Prob. 10WDLCh. 29.3 - Prob. 12LOCh. 29.3 - Prob. 13LOCh. 29.3 - Prob. 11WDLCh. 29.3 - Prob. 14LOCh. 29.3 - Prob. 15LOCh. 29.3 - Prob. 12WDLCh. 29.3 - Prob. 13WDLCh. 29.3 - LEARNING OBJECTIVE
16. Define organogenesis and...Ch. 29.3 - Why is it important for a pregnant woman to...Ch. 29.4 - LEARNING OBJECTIVE
17. Describe the major events...Ch. 29.4 - Prob. 15WDLCh. 29.5 - LEARNING OBJECTIVE
18. Compare and contrast the...Ch. 29.5 - WHAT DID YOU LEARN?
16 What are some of the...Ch. 29.5 - LEARNING OBJECTIVE
19. Discuss the critical...Ch. 29.5 - Prob. 20LOCh. 29.5 - How do estrogen and progesterone act to sustain...Ch. 29.5 - What are the actions of CRH, HPL, oxytocin, and...Ch. 29.5 - Prob. 21LOCh. 29.5 - Prob. 22LOCh. 29.5 - Prob. 2WDTCh. 29.5 - Prob. 19WDLCh. 29.5 - Prob. 20WDLCh. 29.5 - Prob. 23LOCh. 29.5 - Prob. 24LOCh. 29.5 - Prob. 21WDLCh. 29.5 - Prob. 22WDLCh. 29.5 - Prob. 25LOCh. 29.5 - Prob. 26LOCh. 29.5 - Prob. 23WDLCh. 29.5 - Prob. 24WDLCh. 29.5 - Prob. 27LOCh. 29.5 - Prob. 25WDLCh. 29.6 - LEARNING OBJECTIVE
28. Explain the physiologic...Ch. 29.6 - How do progesterone, estrogen, and oxytocin...Ch. 29.6 - LEARNING OBJECTIVE
29. List the signs and...Ch. 29.6 - Prob. 27WDLCh. 29.6 - LEARNING OBJECTIVE
30. Explain the signs and...Ch. 29.6 - LEARNING OBJECTIVE
31. Describe the positive...Ch. 29.6 - Prob. 28WDLCh. 29.6 - Prob. 29WDLCh. 29.6 - Prob. 32LOCh. 29.6 - Prob. 30WDLCh. 29.6 - Prob. 31WDLCh. 29.7 - Prob. 33LOCh. 29.7 - Prob. 34LOCh. 29.7 - Prob. 3WDTCh. 29.7 - Prob. 32WDLCh. 29.7 - Prob. 33WDLCh. 29.8 - Prob. 35LOCh. 29.8 - Prob. 34WDLCh. 29.8 - Prob. 36LOCh. 29.8 - Prob. 35WDLCh. 29.8 - Prob. 37LOCh. 29.8 - Prob. 4WDTCh. 29.8 - How does the positive feedback mechanism in...Ch. 29.8 - Prob. 38LOCh. 29.8 - Prob. 37WDLCh. 29.9 - Prob. 38WDLCh. 29.9 - Prob. 40LOCh. 29.9 - How does codominant inheritance differ from...Ch. 29.9 - Prob. 41LOCh. 29.9 - Prob. 40WDLCh. 29.9 - Prob. 42LOCh. 29.9 - Prob. 41WDLCh. 29 - _____ 1. The outer layer of the blastocyst that...Ch. 29 - _____ 2. At about day 3 after fertilization, the...Ch. 29 - During gastrulation, cells from the _____ layer of...Ch. 29 - ______ 4. The cells of the embryoblast...Ch. 29 - _____ 5. Which of the following is not an...Ch. 29 - _____ 6. All of the following cardiovascular...Ch. 29 - _____ 7. After a woman gives birth, what happens...Ch. 29 - _____ 8. Freckles are considered to be a dominant...Ch. 29 - _____ 9. Skin color is a trait that is determined...Ch. 29 - A woman is a carrier for the color-blindness gene,...Ch. 29 - Briefly describe the process of fertilization,...Ch. 29 - List the five regions of the mesoderm, and...Ch. 29 - Explain why teratogens are especially harmful to...Ch. 29 - Describe the differences between the embryonic...Ch. 29 - Prob. 15DYBCh. 29 - Prob. 16DYBCh. 29 - Prob. 17DYBCh. 29 - Describe the various ways by which the mothers...Ch. 29 - Compare and contrast strict dominant-recessive...Ch. 29 - Explain the difference between X-linked recessive...Ch. 29 - Prob. 1CALCh. 29 - Ashley is a 29-year-old pregnant woman who is in...Ch. 29 - Ashley is a 29-year-old pregnant woman who is in...Ch. 29 - Prob. 4CALCh. 29 - Ashley is a 29-year-old pregnant woman who is in...Ch. 29 - Prob. 1CSLCh. 29 - Prob. 2CSLCh. 29 - Prob. 3CSL
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- In menstruation, the functional layer is shed from the endometrium. Explain the hormonal and physical factors responsible for this shedding. (See Figure 25.19.)arrow_forwardDarcy and Raul are having difficulty conceiving a child. Darcy ovulates every 28 days, and Raul’s sperm count is normal. If we could observe Raul’s sperm about an hour after ejaculation, however, we’d see that they appear to be moving only sluggishly. When Raul’s sperm eventually encounter Darcy’s oocyte, they appear to be incapable of generating an adequate acrosomal reaction. Which process has probably gone wrong?arrow_forwardA. There is an increase of FSH at the beginning of the menstrual cycle. What causes it? B. There is a surge in E2 level before the ovulation. What causes it? C. There is a decrease of FSH before the ovulation. What causes it? D. There is a surge of LH and FSH that induces the ovulation. What causes the surge? E. There is a decrease of LH and FSH after ovulation. What causes it? F. There is a decrease in E2 after ovulation. What causes it? G. There is an increase of E2 and P4 a few days after the ovulation. What causes it? H. There is a decrease of E3 and P4 at the end of menstrual cycle. What causes it?arrow_forward
- The placenta functions to Select one: a. produce blood cells b. create amniotic fluid c. provide nutrition for the growing fetus d. exchange nutrients and wastesarrow_forwardTable below shows the concentration of some of the sex hormones in the blood of a cow (mammal) over a period of 24 days. Time/days Concentration of hormone in the blood/arbitrary units progesterone oestrogen LH 1 14 32 8. 1 4 4. 7 1 6. 10 1 8 14 1 10 18 7 1 12 19 7 1 14 19 7 1 1 16 18 18 8 18 1 20 14 32 1 8. 32 22 1 24 8. 1.arrow_forwardA woman taking birth control pills would be expected to have Select one: a. higher than normal FSH and LH levels due to fewer negative feedback messages being sent to the ovaries b. higher than normal FSH and LH levels due to fewer negative feedback messages being sent to the pituitary gland c. lower than normal FSH and LH levels due to more negative feedback messages being sent to the pituitary gland d. lower than normal FSH and LH levels due to more negative feedback messages being sent to the ovariesarrow_forward
- A woman taking birth control pills would be expected to have Select one: a. higher than normal FSH and LH levels due to fewer negative feedback messages being sent to the ovaries b. higher than nomal FSH and LH levels due to fewer negative feedback messages being sent to the pituitary gland c. lower than normal FSH and LH levels due to more negative feedback messages being sent to the pituitary gland d. lower than normal FSH and LH levels due to more negative feedback messages being sent to the ovariesarrow_forwardDuring the third trimester of pregnancy, the placenta is not the primary source of which hormone in maternal blood?a. estrogenb. prolactinc. progesteronearrow_forwardA pregnant woman in substantial pain called her doctor and explained that she was about to have her baby "right away". The doctor calmed her and asked how she had come to that conclusion. She said that her water has broken and that her husband could see the baby's head. a. Was she right to believe that birth was imminent? If so, what stage of labor was she in? b. Do you think she had time to make it to the hospital 60 miles away? Why or why not?arrow_forward
- Implantation of a blastocyst does not always happen. Approximately how many days after fertilization may implantation of a blastocyst occur?arrow_forwardKen Doll isn't very smart. He and Barbie are not trying to have a baby. Ken is confused about a few details and asked his friend GI Joe why Barbie became pregnant. "Look, we did the deed on Monday and she didn't ovulate until Thursday. I should have been safe and my 'little swimmers' should have been out of there by then." How should GI Joe explain the necessary information to Ken?arrow_forwardWhich of the following statements does NOT correctly describe the events following fertilization? Select one: a. Only the inner cell mass cells in a blastocyst are pluripotent. b. The trophoblast has an important role in maintaining the pregnancy, as it prevents the endometrium from shedding. c. As hCG takes over maintaining the endometrium immediately after implantation, the corpus luteum degenerates into the corpus albican. d. All 16 cells in a morula are truly totipotent, meaning that they can become any cells in the human body.arrow_forward
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