Question 1

After birth, which of the following events does not occur?

Accepted Answer

A)  The foramen ovale closes due to blood pressure changes. 
B)  Resistance to blood flow through the pulmonary circuit decreases. 
C)  Blood pressure in the left atrium decreases. 
D)  The umbilical vessels constrict. 
E)  Blood pressure in the right atrium falls. 
A)  The foramen ovale closes due to blood pressure changes. 
B)  Resistance to blood flow through the pulmonary circuit decreases. 
C)  Blood pressure in the left atrium decreases. 
D)  The umbilical vessels constrict. 
E)  Blood pressure in the right atrium falls.

Question 2

Which of the following hormones is concerned with influencing lactation?

Accepted Answer

A)  Progesterone 
B)  Estrogen 
C)  hCG 
D)  Relaxin 
E)  Prolactin 
A)  Progesterone 
B)  Estrogen 
C)  hCG 
D)  Relaxin 
E)  Prolactin

Question 3

In which of the following periods of embryonic development does formation of the primary germ layers occur?

Accepted Answer

A)  Morula 
B)  Cleavage 
C)  Gastrulation 
D)  Zygote 
E)  Blastocyst 
A)  Morula 
B)  Cleavage 
C)  Gastrulation 
D)  Zygote 
E)  Blastocyst

Question 4

How long after implantation does the heart start beating?

Accepted Answer

A)  The fourth week 
B)  The fifth week 
C)  The sixth week 
D)  The second week 
E)  The third week 
A)  The fourth week 
B)  The fifth week 
C)  The sixth week 
D)  The second week 
E)  The third week

Question 5

The flattened cell mass developed during the early embryonic stage, which has an outer ectoderm and an inner endoderm, is called a chorion.

Accepted Answer

A) True 
 B)False

Question 6

The umbilical cord is formed by the __________, blood vessels, and yolk sac.

Accepted Answer

The answer of The umbilical cord is formed by the...

Question 7

Relaxin is a hormone produced by the placenta and ovaries to prevent morning sickness.

Accepted Answer

A) True 
 B)False

Question 8

The neonatal period begins at birth, and lasts through the first four weeks.

Accepted Answer

A) True 
 B)False

Question 9

Which of the following is a medical emergency for both the mother and the fetus?

Accepted Answer

A)  Abruptio placentae 
B)  Preeclampsia 
C)  Placenta previa 
D)  Ectopic pregnancy 
E)  Parturition 
A)  Abruptio placentae 
B)  Preeclampsia 
C)  Placenta previa 
D)  Ectopic pregnancy 
E)  Parturition

Question 10

Which of the following is the length of the fetus during the fourth month?

Accepted Answer

A)  8 cm 
B)  14 cm 
C)  20 cm 
D)  35 cm 
E)  42 cm 
A)  8 cm 
B)  14 cm 
C)  20 cm 
D)  35 cm 
E)  42 cm

Question 11

After the egg is fertilized, it is known as a(n) __________.

Accepted Answer

The answer of After the egg is fertilized, it is...

Question 12

Which of the following are identical cells that are produced by early cleavage?

Accepted Answer

A)  Blastomeres 
B)  Amnions 
C)  Blastocysts 
D)  Morulas 
E)  Gastrulas 
A)  Blastomeres 
B)  Amnions 
C)  Blastocysts 
D)  Morulas 
E)  Gastrulas

Question 13

The hollow cavity within the blastocyst is the decidua basalis.

Accepted Answer

A) True 
 B)False

Question 14

The placental stage is when the placenta is expelled from the __________.

Accepted Answer

The answer of The placental stage is when the placenta...

Question 15

After which day of development is the fetus considered to be "full-term"?

Accepted Answer

A)  255 
B)  266 
C)  275 
D)  285 
E)  296 
A)  255 
B)  266 
C)  275 
D)  285 
E)  296

Question 16

A hydatidiform mole may be caused by which of the following?

Accepted Answer

A)  Older maternal age 
B)  A genetic abnormality 
C)  Malnutrition 
D)  Hyperthyroidism 
E)  Gestational diabetes 
A)  Older maternal age 
B)  A genetic abnormality 
C)  Malnutrition 
D)  Hyperthyroidism 
E)  Gestational diabetes

Question 17

The mass of cells that is formed after many cell divisions following fertilization is called a:

Accepted Answer

A)  blastula. 
B)  gastrula. 
C)  morula. 
D)  blastocyst. 
E)  chorion. 
A)  blastula. 
B)  gastrula. 
C)  morula. 
D)  blastocyst. 
E)  chorion.

Question 18

Which of the following hormones is released during labor?

Accepted Answer

A)  Estrogen 
B)  Progesterone 
C)  Oxytocin 
D)  FSH 
E)  LH 
A)  Estrogen 
B)  Progesterone 
C)  Oxytocin 
D)  FSH 
E)  LH

Question 19

The structure that forms during the third week of development, as a tube extending from the early yolk sac into the connecting stalk of the embryo, is the:

Accepted Answer

A)  chorion. 
B)  lacunae. 
C)  amnion. 
D)  allantois. 
E)  decidua. 
A)  chorion. 
B)  lacunae. 
C)  amnion. 
D)  allantois. 
E)  decidua.

Question 20

When do premature deliveries usually occur?

Accepted Answer

A)  At 21 to 24 weeks 
B)  At 24 to 28 weeks 
C)  At 28 to 36 weeks 
D)  At 36 to 38 weeks 
E)  At 38 to 42 weeks 
A)  At 21 to 24 weeks 
B)  At 24 to 28 weeks 
C)  At 28 to 36 weeks 
D)  At 36 to 38 weeks 
E)  At 38 to 42 weeks

Exam 26: Pregnancy and Development

After birth, which of the following events does not occur?

Which of the following hormones is concerned with influencing lactation?

In which of the following periods of embryonic development does formation of the primary germ layers occur?

How long after implantation does the heart start beating?

The flattened cell mass developed during the early embryonic stage, which has an outer ectoderm and an inner endoderm, is called a chorion.

The umbilical cord is formed by the __________, blood vessels, and yolk sac.

Relaxin is a hormone produced by the placenta and ovaries to prevent morning sickness.

The neonatal period begins at birth, and lasts through the first four weeks.

Which of the following is a medical emergency for both the mother and the fetus?

Which of the following is the length of the fetus during the fourth month?

After the egg is fertilized, it is known as a(n) __________.

Which of the following are identical cells that are produced by early cleavage?

The hollow cavity within the blastocyst is the decidua basalis.

The placental stage is when the placenta is expelled from the __________.

After which day of development is the fetus considered to be "full-term"?

A hydatidiform mole may be caused by which of the following?

The mass of cells that is formed after many cell divisions following fertilization is called a:

Which of the following hormones is released during labor?

The structure that forms during the third week of development, as a tube extending from the early yolk sac into the connecting stalk of the embryo, is the:

When do premature deliveries usually occur?

Introduction to Human Anatomy and Physiology

Chemical Basics of Life

Cells

Cellular Metabolism

Tissues

Integumentary System

Bone Tissues and the Skeletal System

Articulations

Muscle Tissue

Muscular System

Neural Tissue

Central Nervous System

Peripheral Nervous System and Reflex Activity

Autonomic Nervous System

Special Senses

Endocrine System

Blood

The Heart

Vascular System

Lymphatic System and Immunity

Respiratory System

Urinary System

Fluid, Electrolyte, and Acid-Base Balance

Digestive System

Reproductive System

Heredity

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