Question 1

Which of the following occurs during the embryonic stage of development?

Accepted Answer

A)   Chorion appears.
B)   Nose, eyes, and ears become noticeable.
C)   Testes descend into the scrotum.
D)   Heartbeat can be heard.
E)   Fingernails appear.F) C) and E)
G) C) and D)

Question 2

Fetal development includes the third through ninth months of development.

Accepted Answer

A) True 
 B)False

Question 3

Which of the following problems is not associated with pregnancy?

Accepted Answer

A)   lordosis
B)   lower back pain
C)   gastrointestinal reflux
D)   incontinence
E)   impotenceF) None of the above
G) B) and E)

Question 4

The embryonic disk becomes the inner cell mass after gastrulation.

Accepted Answer

A) True 
 B)False

Question 5

Which of the following is present in the fetus but not in an adult human?

Accepted Answer

A)   ductus arteriosus
B)   pulmonary vein
C)   left atrium
D)   superior vena cava
E)   internal iliac arteryF) A) and C)
G) B) and D)

Question 6

The yolk sac of the chick provides nutrients to the developing embryo. What structure serves the same role in humans?

Accepted Answer

A)   chorion
B)   allantois
C)   yolk sac
D)   amnion
E)   zona pellucidaF) A) and C)
G) A) and D)

Question 7

Which of the following gives the correct order of layers the sperm crosses when entering the egg?

Accepted Answer

A)   corona radiata, zona pellucida, oocyte plasma membrane
B)   zona pellucida, oocyte plasma membrane, corona radiata
C)   oocyte plasma membrane, corona radiata, zona pellucida
D)   corona radiata, oocyyte plasma membrane, zona pellucida
E)   zona pellucida, corona radiata, oocyte plasma membraneF) All of the above
G) A) and B)

Question 8

When cells take on specific structure and function, this is called

Accepted Answer

A)   cleavage.
B)   growth.
C)   morphogenesis.
D)   differentiation.
E)   fertilization.F) A) and B)
G) A) and C)

Question 9

The umbilical arteries carry

Accepted Answer

A)   oxygen-rich blood to the developing fetus.
B)   oxygen-rich blood to the placenta.
C)   oxygen-poor blood to the developing fetus.
D)   oxygen-poor blood to the placenta.
E)   oxygen-rich blood to the mother.F) A) and E)
G) B) and D)

Question 10

If a fetus contains an X and a Y chromosome but a defective SRY gene, they will develop

Accepted Answer

A)   into an anatomical female because testosterone is not present.
B)   into an anatomical male because testosterone is not present.
C)   into an anatomical female because testosterone is present.
D)   into an anatomical male because testosterone is present.
E)   into a hermaphrodite due to the presence of estrogen and testosterone.F) A) and D)
G) C) and D)

Question 11

Which part of the sperm contains the chromosomes?

Accepted Answer

A)   tail
B)   middle piece
C)   head
D)   cell membrane
E)   flagellaF) None of the above
G) A) and B)

Question 12

Describe what occurs during cleavage, growth, morphogenesis, and differentiation.

Accepted Answer

Cleavage is the division of the zygote f...

Question 13

When does the mother first begin to feel the fetus move?

Accepted Answer

A)   1-2 months
B)   3-4 months
C)   5-7 months
D)   7-9 months
E)   1-4 weeksF) B) and D)
G) A) and C)

Question 14

Which of the following defines "aging"?

Accepted Answer

A)   progressive changes from infancy until death
B)   the loss of function of various body systems
C)   the onset of sexual maturity
D)   the development of disease or disability
E)   the failure to thriveF) B) and E)
G) A) and B)

Question 15

During fertilization, several sperm penetrate the corona radiata.

Accepted Answer

A) True 
 B)False

Question 16

The amnion is to the amniotic fluid as the allantois is to the

Accepted Answer

A)   blood cell precursors.
B)   chorionic villi.
C)   umbilical blood vessels.
D)   amniotic cavity.
E)   yolk.F) A) and B)
G) C) and D)

Question 17

Summarize the events that occur during each stage of birth.

Accepted Answer

Stage 1 is when the uterine contractions...

Question 18

The white, greasy, cheeselike substance that covers the fetus's skin is called

Accepted Answer

A)   lanugo.
B)   fontanels.
C)   vernix caseosa.
D)   foramen ovale.
E)   ductus arteriosus.F) B) and E)
G) B) and C)

Question 19

The sex of an individual is determined at the moment of fertilization.

Accepted Answer

A) True 
 B)False

Question 20

Development ceases at birth.

Accepted Answer

A) True 
 B)False

Exam 18: Development and Aging

The embryonic disk becomes the inner cell mass after gastrulation.

Correct AnswerverifiedShow Answer

If a fetus contains an X and a Y chromosome but a defective SRY gene, they will develop

Correct AnswerverifiedShow Answer

When cells take on specific structure and function, this is called

Correct AnswerverifiedShow Answer

The sex of an individual is determined at the moment of fertilization.

Correct AnswerverifiedShow Answer

During fertilization, several sperm penetrate the corona radiata.

Correct AnswerverifiedShow Answer

Which of the following occurs during the embryonic stage of development?

Correct AnswerverifiedShow Answer

Which part of the sperm contains the chromosomes?

Correct AnswerverifiedShow Answer

The amnion is to the amniotic fluid as the allantois is to the

Correct AnswerverifiedShow Answer

Summarize the events that occur during each stage of birth.

Correct AnswerverifiedStage 1 is when the uterine contractions...View AnswerShow Answer

Which of the following gives the correct order of layers the sperm crosses when entering the egg?

Correct AnswerverifiedShow Answer

Which of the following is present in the fetus but not in an adult human?

Correct AnswerverifiedShow Answer

Which of the following problems is not associated with pregnancy?

Correct AnswerverifiedShow Answer

The yolk sac of the chick provides nutrients to the developing embryo. What structure serves the same role in humans?

Correct AnswerverifiedShow Answer

The umbilical arteries carry

Correct AnswerverifiedShow Answer

Fetal development includes the third through ninth months of development.

Correct AnswerverifiedShow Answer

Describe what occurs during cleavage, growth, morphogenesis, and differentiation.

Correct AnswerverifiedCleavage is the division of the zygote f...View AnswerShow Answer

When does the mother first begin to feel the fetus move?

Correct AnswerverifiedShow Answer

Development ceases at birth.

Correct AnswerverifiedShow Answer

The white, greasy, cheeselike substance that covers the fetus's skin is called

Correct AnswerverifiedShow Answer

Which of the following defines "aging"?

Correct AnswerverifiedShow Answer

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Stage 1 is when the uterine contractions...
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Cleavage is the division of the zygote f...
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