Question 1

A blastomere is a _____ and a blastocyst is _____.

Accepted Answer

A)   hollow ball of cells; a cell resulting from cleavage
B)   fetal organ produced by cleavage; an embryonic organ produced by cleavage
C)   fetal membrane; an embryonic membrane
D)   cell produced by cleavage; a hollow ball of cellsE) A) and D)
F) A) and C)

Question 2

Which of the following is (are)  true in regard to the fetal stage of development?

Accepted Answer

A)   It begins 8 weeks after fertilization.
B)   The organ systems are mostly formed, although immature.
C)   The head is disproportionately large compared to the rest of the body at the beginning of the stage.
D)   All of the aboveE) All of the above
F) A) and B)

Question 3

The slender projections that grow out from the trophoblast into the uterine wall are called _____ _____.

Accepted Answer

The answer of The slender projections that grow out from...

Question 4

The neonatal period of development extends from birth to the end of the first year.

Accepted Answer

A) True 
 B)False

Question 5

Teratogens are substances that

Accepted Answer

A)   stimulate embryonic growth.
B)   cause congenital malformations.
C)   protect against infections.
D)   cause genetic disease.E) A) and D)
F) A) and C)

Question 6

In a fetus, the umbilical arteries arise from the renal arteries.

Accepted Answer

A) True 
 B)False

Question 7

During the embryonic stage, the primary germ layers develop from the

Accepted Answer

A)   placenta.
B)   blastocyst.
C)   embryonic disc.
D)   morula.E) A) and B)
F) A) and C)

Question 8

The umbilical cord contains two umbilical veins.

Accepted Answer

A) True 
 B)False

Question 9

Some factors that help to stimulate the newborn's first breath are increasing CO2, decreasing pH, decreasing O2, decreasing body temperature, and mechanical stimulation.

Accepted Answer

A) True 
 B)False

Question 10

Monica takes the drug Accutane throughout her pregnancy, and her child has birth defects, due to the exposure. Accutane is a(n)

Accepted Answer

A)   estrogen.
B)   mutagen.
C)   teratogen.
D)   carcinogen.E) B) and C)
F) A) and C)

Question 11

The ductus arteriosus allows fetal blood to bypass the lungs.

Accepted Answer

A) True 
 B)False

Question 12

The term "newborn" refers to the period from birth through _____, whereas the term "infant" refers to the period from _____.

Accepted Answer

A)   3 months; 3 months to 6 months
B)   the first four weeks; the first month to 1 year
C)   one week; the second week through the second year
D)   the first year; the first year to the second yearE) None of the above
F) C) and D)

Question 13

Amniotic fluid

Accepted Answer

A)   stores nutrients for the fetus.
B)   absorbs wastes the fetus excretes.
C)   protects the embryo against being jarred by movements.
D)   provides nutrients to the fetus from the maternal part of the placenta.E) A) and B)
F) A) and C)

Question 14

Factors that can cause congenital malformations by affecting an embryo during its periods of rapid growth and development are called teratogens.

Accepted Answer

A) True 
 B)False

Question 15

Which of the following is a function of hCG?

Accepted Answer

A)   It breaks down the corpus luteum.
B)   It helps protect the blastocyst against being rejected.
C)   It prevents the developing placenta from secreting hormones.
D)   It stimulates the release of enzymes that enable the blastocyst to implant into the endometrium.E) A) and D)
F) None of the above

Question 16

In fetal circulation the descending aorta carries the less oxygenated blood from the _________.

Accepted Answer

A)   foramen ovale.
B)   ductus arteriosus.
C)   ligamentum arteriosum.
D)   ductus venosus.E) B) and C)
F) A) and D)

Question 17

In an adult heart, the previous location of the foramen ovale is marked by a depression called the _____ _____.

Accepted Answer

The answer of In an adult heart, the previous location...

Question 18

Which of the following is not a characteristic of childhood?

Accepted Answer

A)   Secondary teeth replacing primary teeth
B)   Becoming reproductively functional
C)   Establishing bowel control
D)   Developing a high degree of voluntary muscular controlE) None of the above
F) All of the above

Question 19

Embryonic stem cells are derived from the

Accepted Answer

A)   outer cell mass of the morula.
B)   inner cell mass of the blastocyst.
C)   middle layer of the zygote.
D)   trophoblast.E) A) and B)
F) A) and C)

Question 20

The hormone oxytocin aids the birth process by stimulating

Accepted Answer

A)   fetal muscular movements.
B)   uterine wall contractions.
C)   an increase in progesterone secretion.
D)   an increase in estrogen secretion.E) B) and C)
F) A) and D)

Exam 23: Pregnancy, Growth, and Development

In an adult heart, the previous location of the foramen ovale is marked by a depression called the _____ _____.

Correct AnswerverifiedShow Answer

Some factors that help to stimulate the newborn's first breath are increasing CO2, decreasing pH, decreasing O2, decreasing body temperature, and mechanical stimulation.

Correct AnswerverifiedShow Answer

In a fetus, the umbilical arteries arise from the renal arteries.

Correct AnswerverifiedShow Answer

The umbilical cord contains two umbilical veins.

Correct AnswerverifiedShow Answer

Amniotic fluid

Correct AnswerverifiedShow Answer

Monica takes the drug Accutane throughout her pregnancy, and her child has birth defects, due to the exposure. Accutane is a(n)

Correct AnswerverifiedShow Answer

The neonatal period of development extends from birth to the end of the first year.

Correct AnswerverifiedShow Answer

Which of the following is not a characteristic of childhood?

Correct AnswerverifiedShow Answer

Which of the following is a function of hCG?

Correct AnswerverifiedShow Answer

The hormone oxytocin aids the birth process by stimulating

Correct AnswerverifiedShow Answer

Teratogens are substances that

Correct AnswerverifiedShow Answer

The term "newborn" refers to the period from birth through _____, whereas the term "infant" refers to the period from _____.

Correct AnswerverifiedShow Answer

Embryonic stem cells are derived from the

Correct AnswerverifiedShow Answer

A blastomere is a _____ and a blastocyst is _____.

Correct AnswerverifiedShow Answer

The slender projections that grow out from the trophoblast into the uterine wall are called _____ _____.

Correct AnswerverifiedShow Answer

Factors that can cause congenital malformations by affecting an embryo during its periods of rapid growth and development are called teratogens.

Correct AnswerverifiedShow Answer

In fetal circulation the descending aorta carries the less oxygenated blood from the _________.

Correct AnswerverifiedShow Answer

The ductus arteriosus allows fetal blood to bypass the lungs.

Correct AnswerverifiedShow Answer

Which of the following is (are) true in regard to the fetal stage of development?

Correct AnswerverifiedShow Answer

During the embryonic stage, the primary germ layers develop from the

Correct AnswerverifiedShow Answer

In an adult heart, the previous location of the foramen ovale is marked by a depression called the _ _.

Correct Answer
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Some factors that help to stimulate the newborn's first breath are increasing CO₂, decreasing pH, decreasing O₂, decreasing body temperature, and mechanical stimulation.

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The term "newborn" refers to the period from birth through _, whereas the term "infant" refers to the period from _.

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A blastomere is a _ and a blastocyst is _.

Correct Answer
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The slender projections that grow out from the trophoblast into the uterine wall are called _ _.

Correct Answer
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