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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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

Answer 2

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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Answer 3

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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Answer 4

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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Answer 5

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.

Answer 6

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.

Answer 7

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.

Answer 8

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Answer 9

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Answer 11

Ch. 42 - The end product of cleavage is a __________. a....Ch. 42 - The outermost germ layer in a vertebrate gastrula...Ch. 42 - Prob. 3SQ Ch. 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. 1DAA Ch. 42 - Prob. 2DAA Ch. 42 - Prob. 3DAA Ch. 42 - Birth Defects and Multiple Births A woman who...

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.

Solution Summary: The author explains that most miscarriages occur in the first trimester. They are caused by chromosomal abnormalities, occupational hazards, infections, surgical procedures, and accidents.

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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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Chapter 42 Solutions