Fundamentals of Anatomy & Physiology Plus Mastering A&P with eText - Access Card Package (10th Edition) (New A&P Titles by Ric Martini and Judi Nath)
10th Edition
ISBN: 9780321908599
Author: Frederic H. Martini, Judi L. Nath, Edwin F. Bartholomew
Publisher: PEARSON
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Chapter 29, Problem 7RQ
Summary Introduction
Introduction:
The chronic villi formed by the third month, when the chorion and the mesoderm increase its length to reach the core of each trophoblastic villus, results in the formation of the chronic villi. Chronic villi connected with the maternal tissue for the growth of fetus and allow maximum surface area for the active and passive exchange between the placenta and maternal bloodstream.
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The epiblast forms (a) only the ectoderm, (b) the yolk sac, (c) only the mesoderm and ectoderm, (d) all three primary germ layers.
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Chapter 29 Solutions
Fundamentals of Anatomy & Physiology Plus Mastering A&P with eText - Access Card Package (10th Edition) (New A&P Titles by Ric Martini and Judi Nath)
Ch. 29 - Define differentiation.Ch. 29 - What event marks the onset of development?Ch. 29 - Define inheritance.Ch. 29 - Prob. 4CPCh. 29 - Prob. 5CPCh. 29 - Define gestation.Ch. 29 - Characterize the key features of each trimester.Ch. 29 - What is the developmental fate of the inner cell...Ch. 29 - Improper development of which of the...Ch. 29 - Prob. 11CP
Ch. 29 - Prob. 10CPCh. 29 - Prob. 12CPCh. 29 - Prob. 14CPCh. 29 - Prob. 13CPCh. 29 - Prob. 15CPCh. 29 - Prob. 16CPCh. 29 - Prob. 17CPCh. 29 - Prob. 18CPCh. 29 - Prob. 19CPCh. 29 - What is the difference between colostrum and...Ch. 29 - Prob. 21CPCh. 29 - Describe the relationship between genotype and...Ch. 29 - Prob. 23CPCh. 29 - Prob. 24CPCh. 29 - Prob. 25CPCh. 29 - The chorionic villi (a) form the umbilical cord,...Ch. 29 - Identify the two extra-embryonic membranes and the...Ch. 29 - The hormone that is the basis for a pregnancy test...Ch. 29 - Recessive X-linked traits (a) are passed from...Ch. 29 - Prob. 5RQCh. 29 - Prob. 6RQCh. 29 - Prob. 7RQCh. 29 - If an allele must be present on both the maternal...Ch. 29 - Prob. 9RQCh. 29 - (a) What are the four extra-embryonic membranes?...Ch. 29 - Prob. 11RQCh. 29 - List the factors involved in initialing labor...Ch. 29 - Identify the three life stages that occur between...Ch. 29 - What hormonal events are responsible for puberty?...Ch. 29 - A normally pigmented woman whose father was an...Ch. 29 - Prob. 16RQCh. 29 - Prob. 17RQCh. 29 - After implantation, how does the developing embryo...Ch. 29 - Name the primary placental hormones and their...Ch. 29 - Prob. 20RQCh. 29 - During true labor, what physiological mechanisms...Ch. 29 - What physiological adjustments must an infant make...Ch. 29 - Distinguish between the following paired terms:...Ch. 29 - Indicate the type of inheritance involved in each...Ch. 29 - Hemophilia A, a condition in which blood does not...Ch. 29 - Joe and Jane desperately want to have children,...Ch. 29 - Prob. 27RQCh. 29 - Prob. 28RQCh. 29 - Prob. 1CCCh. 29 - Are Hans and Willem monozygotic twins or dizygotic...
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- Which of the following events does not take place when a fetus is 17 to 20 weeks old? (a) fetal movements quicken, (b) testes descend to the scrotum, (c) silklike hair covers the skin, (d) sweat glands form.arrow_forwardMost birth defects can be traced to disruption of the developmental events during this part of the prenatal period: (a) first 2 weeks, (b) second half of month 1 and all of month 2, (c) month 3, (d) end of month 4, (e) months 8 and 9.arrow_forwardPlacenta ... a) ... develops from trophoblast cells. b) ... develops from embryoblast cells. c) ... allows the blood of the mother and fetus to be mixedarrow_forward
- A friend in your dormitory, a freshman, tells you that she just discovered she is 3 months pregnant. You know that since she came to college she has been experimenting with recreational drugs. Circle the best advice you could give her, and explain your choice. (a) She must stop taking the drugs, but they could not have affected her fetus during these first few months of her pregnancy. (b) Harmful substances usually cannot pass from mother to embryo, so she can keep using drugs. (c) There could be defects in the fetus, so she should stop using drugs and visit a doctor as soon as possible. (d) If she has not taken any drugs in the last week, she is OK.arrow_forwardWhich 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_forwardThe primary germ layer that forms the trunk muscles, heart, and skeleton is (a) ectoderm, (b) endoderm, (c) mesoderm.arrow_forward
- Which of the following consists of both fetal and maternal tissues? (a)umbilical cord (b) placenta (c) amnion (d) allantois (e) yolk sacarrow_forwardInto which structures do the trophoblast cells of the developing embryo, differentiate? a) The developing foetus b) The yolk sac c) The placenta d) The blood vessels e) All of the abovearrow_forwardThe myometrium is the muscular layer of the uterus, and the endometrium is the (a) serosa, (b) adventitia, (c) submucosa, (d) mucosa.arrow_forward
- a) If fetal glucose consumption declines, how does the glucose concentration gradient between fetal circulation and the intervillous space change? b) When fetal glucose consumption declines, how is the concentration gradient between parental circulation and the intervillous space impacted? c) When fetal glucose consumption declines, placental tissue adjusts its consumption of glucose to maintain a constant concentration gradient between the fetal circulation and the intervillous space. In order to maintain this gradient, would you expect placental tissue to increase or decrease its glucose consumption, and why is this the case?arrow_forwardIf an egg cell were treated with EDTA, a chemical that bindscalcium and magnesium ions,(A) the acrosomal reaction would be blocked.(B) the fusion of sperm and egg nuclei would be blocked.(C) the fast block to polyspermy would not occur.(D) the fertilization envelope would not form.arrow_forwardAfter birth, there is production and secretion of milk from the mother'smammary glands.a) Discuss the similarities and differences observed in the stages ofdevelopment of the adult breast tissue, specifically from the nonpregnant, to the pregnant and finally to the lactating stage.b) Why is it normally only after birth that lactogenesis occurs?arrow_forward
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