Biology: The Unity and Diversity of Life (MindTap Course List)
14th Edition
ISBN: 9781305073951
Author: Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr
Publisher: Cengage Learning
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Question
Chapter 42, Problem 13SQ
Summary Introduction
Concept introduction: Miscarriage is the loss of conception or pregnancy due to spontaneous abortion. It is the natural death of the embryo or fetus before it gains the ability to survive on its own.
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1. A placenta vera is formed if
a.The placenta is removed during birth.
b. The maternal blood bathes the chorionic
villi.
c. The epithelium of the decidua is not
penetrated by the chorion.
d. The binucleated chorionic cells penetrate
the decidual epithelium.
2. Which of the following does NOT occur
during decidualization?
a. endometrial
es dilate and form
sinusoids
b. syncytiotrophoblast extend further and
form chorionic villi
c. endometrial stromal cells accumulate
glycogen and lipids
d. syncytiotrophoblast is eroded and lacunae
are filled with maternal blood
3. Which of the following reasons justifies
the midblastula transition?
a. The yolk at the vegetal pole slows down
the cleavage divisions.
b. The embryo has already completed the
requirements for initial cleavage.
c. The embryo needs to replenish transcripts
after using its maternal reserves.
d. The embryo needs to replenish its energy
after several rounds of fast division.
1. A placenta vera is formed if
a.The placenta is removed during birth.
b. The maternal blood bathes the chorionic villi.
c. The epithelium of the decidua is not penetrated by the chorion.
d. The binucleated chorionic cells penetrate the decidual epithelium.
2. Which of the following does NOT occur during decidualization?
a. endometrial capillaries dilate and form sinusoids
b. syncytiotrophoblast extend further and form chorionic villi
c. endometrial stromal cells accumulate glycogen and lipids
d. syncytiotrophoblast is eroded and lacunae are filled with maternal blood
3. Which of the following reasons justifies the midblastula transition?
a. The yolk at the vegetal pole slows down the cleavage divisions.
b. The embryo has already completed the requirements for initial cleavage.
c. The embryo needs to replenish transcripts after using its maternal reserves.
d. The embryo needs to replenish its energy after several rounds of fast…
The foramen ovale causes the fetal circulatory system to bypass the ________. a. liver b. lungs c. kidneys d. gonads
Chapter 42 Solutions
Biology: The Unity and Diversity of Life (MindTap Course List)
Ch. 42 - The end product of cleavage is a __________. a....Ch. 42 - The outermost germ layer in a vertebrate gastrula...Ch. 42 - Prob. 3SQCh. 42 - Match each term with the most suitable...Ch. 42 - In humans, fertilization typically occurs in the...Ch. 42 - The ________, a fluid-filled sac, surrounds and...Ch. 42 - Prob. 1DAACh. 42 - Prob. 2DAACh. 42 - Prob. 3DAACh. 42 - Birth Defects and Multiple Births A woman who...
Ch. 42 - The placenta consists of __________. a. embryonic...Ch. 42 - During the fetal period, ____________. a....Ch. 42 - Prob. 9SQCh. 42 - Match each hormone with its action(s). ______...Ch. 42 - Prob. 11SQCh. 42 - Prob. 12SQCh. 42 - Prob. 13SQCh. 42 - Prob. 14SQCh. 42 - Prob. 15SQCh. 42 - The rubella virus causes German measles. If a...Ch. 42 - Prob. 2CTCh. 42 - Prob. 3CT
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