Human Biology (MindTap Course List)
11th Edition
ISBN: 9781305112100
Author: Cecie Starr, Beverly McMillan
Publisher: Cengage Learning
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Chapter 17, Problem 9SQ
Summary Introduction
Introduction: The process of physical expulsion of the fetus and placenta from the uterus is called labor or parturition. After expulsion, the fetus is known as neonate or newborn. To adjust with the life outside the uterus, a variety of cardiovascular and respiratory changes occur in the neonate quickly after the birth.
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Which of the following statements is incorrect?a. The placenta secretes hormones such as progesterone, hCG, and estrogen.b. Embryonic tissue and maternal tissue forms the placenta.c. The chorion supplies nutrients to the embryo by diffusion.d. The umbilical cord is formed by one artery and two veins
Which of the following statements is not true about the placenta? A. It provides exchange of wastes and nutrients between the mother and the fetus. B. It develops by the third month of gestation. C. It allows transfer of maternal immunoglobulin D. It allows passage of bacteria and virus.
-Provide explanation
Which of the following statements is NOT correct about the umbilical cord?
Select one:
a. The umbilical cord is formed from the chorion.
b. The placenta connects to the embryon via the umbilical cord.
c. The umbilical cord consists of two arteries and one vein.
d. The umbilical cord is formed from the yolk sac and the allantois.
Chapter 17 Solutions
Human Biology (MindTap Course List)
Ch. 17 - Define and describe the main features of the...Ch. 17 - Prob. 2RQCh. 17 - Summarize the development of an embryo and a...Ch. 17 - Label the early development stages shown in the...Ch. 17 - Prob. 1SQCh. 17 - During cleavage, the _______ is converted to a...Ch. 17 - Prob. 3SQCh. 17 - Prob. 4SQCh. 17 - _________ is the gene-guided process by which...Ch. 17 - In a human zygote, the cell divisions of cleavage...
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- Nutrient and waste requirements for the developing fetus are handled during the first few weeks by _____. a. the placenta b. diffusion through the endometrium c. the chorion d. the blastocystarrow_forwardThe uterus rises out of the pelvis and becomes an abdominal organ about the: a. Eighteenth weeks of pregnancy b. Eight week of pregnancy c. Tenth week of pregnancy d. Twelfth week of pregnancyarrow_forwardThe birth starts thanks to increased ... a) ... stretching of the uterine muscles. b) ... release of oxytocin. c) ... release of glucocorticoids from the fetus. d) ... release of estrogen from the placenta.arrow_forward
- All of the following changes take place during the last trimester of pregnancy EXCEPT- a, the cerebral cortex develops b. the baby reaches the age of viability c. the fetus gains weight d. the blastocyst implants to the lining of the uterusarrow_forwardIn human beings, after fertilisation, the structure which gets embedded in the wall of uterus is: (a) ovum (b) embryo (c) foetus (d) zygotearrow_forwardWhich of the following is false? a. The endoderm, mesoderm, ectoderm are germ layers. b. The trophoblast is a germ layer. c. The inner cell mass is a source of embryonic stem cells. d. The blastula is often a hollow ball of cells.arrow_forward
- At what stage uteroplacental circulation started? a.Maternal blood entering the lacunar b.Formation of lacunar c.Formation of extraembryonic mesoderm d.Embryo completely embeddedarrow_forwardWhat would happen if the trophoblast did not secrete hCG upon implantation of the blastocyst? a. The cells would not continue to divide. b. The corpus luteum would continue to produce progesterone and estrogen. c. Menses would flush the blastocyst out of the uterus. d. The uterine mucosa would not envelop the blastocyst.arrow_forward
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