Question 1

The cells of a blastocyst that help form the chorion constitute the

Accepted Answer

A)   blastomere.
B)   inner cell mass.
C)   trophoblast.
D)   zona pellucida.E) A) and D)
F) A) and B)

Question 2

Repair enzymes correct

Accepted Answer

A)   the degeneration of collagen and elastin.
B)   mutations that occur when DNA replicates.
C)   free radical build-up.
D)   lipofuscin build-up.E) A) and B)
F) None of the above

Question 3

Dizygotic twins result from

Accepted Answer

A)   one egg cell and one sperm cell.
B)   one egg cell and two sperm cells.
C)   two egg cells and one sperm cell.
D)   two egg cells and two sperm cells.E) A) and B)
F) None of the above

Question 4

Proteolytic enzymes from the trophoblast aid implantation of an embryo.

Accepted Answer

A) True 
 B)False

Question 5

Which of the following factors stimulates a newborn's first breath?

Accepted Answer

A)   Increasing concentration of carbon dioxide
B)   Decreasing pH
C)   Low oxygen concentration
D)   All of the aboveE) A) and B)
F) None of the above

Question 6

Development is a continuous process and includes growth.

Accepted Answer

A) True 
 B)False

Question 7

The implantation of the blastocyst results from

Accepted Answer

A)   enzymes digesting the endometrium around the blastocyst.
B)   hyaluronic acid breaking down the myometrium around the blastocyst.
C)   hCG stimulating the growth of trophoblast blood vessels.
D)   the cessation of the reproductive cycle.E) All of the above
F) A) and B)

Question 8

The placenta allows

Accepted Answer

A)   oxygen and nutrients to diffuse from maternal blood to the embryo.
B)   carbon dioxide and other wastes to diffuse from the maternal blood to the embryonic blood.
C)   maternal blood to mix with fetal blood.
D)   the fetus to enlarge without rupturing the mother's abdomen.E) B) and C)
F) A) and D)

Question 9

In an adult, the proximal portions of the umbilical arteries persist and supply blood to the _____ _____.

Accepted Answer

The answer of In an adult, the proximal portions of...

Question 10

Single genes that are important in determining how long a person lives affect

Accepted Answer

A)   glucose and lipid metabolism.
B)   cell cycle control.
C)   immune system functioning and response to stress.
D)   all of the above.E) B) and C)
F) A) and B)

Question 11

The hormones that maintain the uterine wall during the last 5 to 6 months of pregnancy are

Accepted Answer

A)   FSH and LH.
B)   human chorionic gonadotropin and synthetic estrogen.
C)   placental lactogen and relaxin.
D)   placental estrogen and progesterone.E) C) and D)
F) B) and C)

Question 12

Following birth, the infant's metabolic rate

Accepted Answer

A)   increases and its oxygen consumption increases.
B)   increases and its oxygen consumption decreases.
C)   decreases and its oxygen consumption increases.
D)   decreases and its oxygen consumption decreases.E) A) and B)
F) A) and C)

Question 13

Compared to cow milk, human milk has

Accepted Answer

A)   1/3 the protein.
B)   1/2 the protein.
C)   2 times the protein.
D)   3 times the proteinE) A) and C)
F) C) and D)

Question 14

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

Accepted Answer

A) True 
 B)False

Question 15

The fertilized ovum is also called a _____.

Accepted Answer

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

Question 16

__________ are substances that interfere with development of an embryo, causing congenital malformations.

Accepted Answer

The answer of __________ are substances that interfere with development...

Question 17

Muscle contractions of the uterine walls and ________ in the semen aid sperm cell movement through the uterus and uterine tubes.

Accepted Answer

A)   estrogen
B)   progestins
C)   prostaglandins
D)   epinephrineE) A) and D)
F) B) and C)

Question 18

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

Question 19

In the day or two before milk secretion begins, the breasts secrete ________.

Accepted Answer

The answer of In the day or two before milk...

Question 20

A major difference between fetal blood flow and adult blood flow is that in the fetus the

Accepted Answer

A)   inferior vena cava contains blood high in oxygen.
B)   pulmonary artery delivers blood to the lungs.
C)   femoral vein contains blood low in oxygen.
D)   internal iliac arteries are known as umbilical arteries.E) A) and B)
F) C) and D)

Exam 23: Pregnancy, Growth, and Development

Proteolytic enzymes from the trophoblast aid implantation of an embryo.

Correct AnswerverifiedShow Answer

Muscle contractions of the uterine walls and ________ in the semen aid sperm cell movement through the uterus and uterine tubes.

Correct AnswerverifiedShow Answer

In an adult, the proximal portions of the umbilical arteries persist and supply blood to the _____ _____.

Correct AnswerverifiedShow Answer

The implantation of the blastocyst results from

Correct AnswerverifiedShow Answer

In the day or two before milk secretion begins, the breasts secrete ________.

Correct AnswerverifiedShow Answer

The hormones that maintain the uterine wall during the last 5 to 6 months of pregnancy are

Correct AnswerverifiedShow Answer

A major difference between fetal blood flow and adult blood flow is that in the fetus the

Correct AnswerverifiedShow Answer

Repair enzymes correct

Correct AnswerverifiedShow Answer

__________ are substances that interfere with development of an embryo, causing congenital malformations.

Correct AnswerverifiedShow Answer

Single genes that are important in determining how long a person lives affect

Correct AnswerverifiedShow Answer

Development is a continuous process and includes growth.

Correct AnswerverifiedShow Answer

Which of the following factors stimulates a newborn's first breath?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Dizygotic twins result from

Correct AnswerverifiedShow Answer

The cells of a blastocyst that help form the chorion constitute the

Correct AnswerverifiedShow Answer

Compared to cow milk, human milk has

Correct AnswerverifiedShow Answer

The placenta allows

Correct AnswerverifiedShow Answer

Following birth, the infant's metabolic rate

Correct AnswerverifiedShow Answer

The fertilized ovum is also called a _____.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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In an adult, the proximal portions of the umbilical arteries persist and supply blood to the _ _.

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