Question 1

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) B) and D)
F) None of the above

Question 2

Development is a continuous process and includes growth.

Accepted Answer

A) True 
 B)False

Question 3

Fertilization usually occurs in the

Accepted Answer

A)  ovary.
B)  uterine tube.
C)  uterus.
D)  vagina.E) A) and B)
F) C) and D)

Question 4

The placenta is composed of tissues from the

Accepted Answer

A)  mother only.
B)  embryo only.
C)  mother and embryo.
D)  chorion only.E) A) and C)
F) B) and D)

Question 5

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 6

In an adult,a solid,cordlike structure called the ______ ______ represents the former umbilical vein.

Accepted Answer

The answer of In an adult,a solid,cordlike structure called the...

Question 7

The primary function of surfactant is to increase surface tension in the newborn's lungs.

Accepted Answer

A) True 
 B)False

Question 8

Preimplantation genetic diagnosis works because

Accepted Answer

A)  the donor and recipient are siblings and therefore they share most of their genetic material.
B)  each cell in a human at any stage can give rise to a separate individual.
C)  the missing genes are injected into cell nuclei of the recipient.
D)  a cell can be removed from an 8-celled human embryo and the remaining 7 cells can continue developing.E) None of the above
F) B) and C)

Question 9

Centenarians are

Accepted Answer

A)  people who live past 90.
B)  people in the military.
C)  people who live past 100 years.
D)  people who die just before their 100th birthdays.E) A) and B)
F) B) and C) C

Question 10

As a result of the foramen ovale,blood is allowed to bypass the

Accepted Answer

A)  aortA.
B)  liver.
C)  lungs.
D)  kidneys.E) A) and D)
F) All of the above

Question 11

The fertilized ovum is also called a _____.

Accepted Answer

The answer of The fertilized ovum is also called a...

Question 12

Fetal hemoglobin becomes largely replaced with adult hemoglobin

Accepted Answer

A)  after the first trimester.
B)  at birth.
C)  from 4 months after birth.
D)  when a child starts school.E) A) and D)
F) A) and B)

Question 13

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) A) and D)
F) A) and B)

Question 14

The fetal blood that passes through the ductus venosus is relatively

Accepted Answer

A)  low in oxygen and nutrients.
B)  high in oxygen and nutrients.
C)  low in oxygen but high in nutrients.
D)  high oxygen but low in nutrients.E) A) and C)
F) None of the above

Question 15

Human prenatal development takes ___ weeks.

Accepted Answer

A)  28
B)  32
C)  38
D)  44E) C) and D)
F) A) and B) C

Question 16

Thalidomide is

Accepted Answer

A)  a drug that causes fetal alcohol syndrome.
B)  a drug that causes fetal limb defects,but is used to treat leprosy.
C)  a drug that causes mental retardation in fetuses,but is used to treat acne.
D)  a type of bacterial infection.E) A) and B)
F) A) and C)

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 of...

Question 18

Conjoined twins result from incomplete twinning,which occurs during the first month of gestation.

Accepted Answer

A) True 
 B)False

Question 19

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) None of the above
F) All of the above D

Question 20

Which of the following adult structures is not derived from the same primary germ layer as the others?

Accepted Answer

A)  nerves
B)  blood vessels
C)  muscles
D)  bonesE) B) and C)
F) A) and D)

Exam 23: Pregnancy, Growth, and Development

Which of the following is a function of hCG?

Correct AnswerverifiedShow Answer

Development is a continuous process and includes growth.

Correct AnswerverifiedShow Answer

Fertilization usually occurs in the

Correct AnswerverifiedShow Answer

The placenta is composed of tissues from the

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

In an adult,a solid,cordlike structure called the ______ ______ represents the former umbilical vein.

Correct AnswerverifiedShow Answer

The primary function of surfactant is to increase surface tension in the newborn's lungs.

Correct AnswerverifiedShow Answer

Preimplantation genetic diagnosis works because

Correct AnswerverifiedShow Answer

Centenarians are

Correct AnswerverifiedC

As a result of the foramen ovale,blood is allowed to bypass the

Correct AnswerverifiedShow Answer

The fertilized ovum is also called a _____.

Correct AnswerverifiedShow Answer

Fetal hemoglobin becomes largely replaced with adult hemoglobin

Correct AnswerverifiedShow Answer

The hormone oxytocin aids the birth process by stimulating

Correct AnswerverifiedShow Answer

The fetal blood that passes through the ductus venosus is relatively

Correct AnswerverifiedShow Answer

Human prenatal development takes ___ weeks.

Correct AnswerverifiedC

Thalidomide is

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Conjoined twins result from incomplete twinning,which occurs during the first month of gestation.

Correct AnswerverifiedShow Answer

A blastomere is a _____ and a blastocyst is _____.

Correct AnswerverifiedD

Which of the following adult structures is not derived from the same primary germ layer as the others?

Correct AnswerverifiedShow Answer

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

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In an adult,a solid,cordlike structure called the represents the former umbilical vein.

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C

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C

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

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A blastomere is a _ and a blastocyst is _.

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D

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