Question 1

During fertilization,several sperm penetrate the corona radiata.

Accepted Answer

A) True 
 B)False

Question 2

At the end of the embryonic period,the embryo is about 12 inches long.

Accepted Answer

A) True 
 B)False

Question 3

Why would you predict that the blood carbon dioxide levels in a pregnant woman would fall?

Accepted Answer

A)   She has trouble breathing due to the expanding uterus.
B)   The fetus is removing carbon dioxide from her blood.
C)   The maternal oxygen levels are also falling.
D)   Pregnancy creates a favorable concentration gradient between the fetal and maternal blood.
E)   The bronchial tubes relax.F) A) and E)
G) B) and E)

Question 4

Which of the following would be considered a poor health practice for a woman planning to get pregnant or already pregnant?

Accepted Answer

A)   updating all vaccinations
B)   treating all sexually transmitted diseases
C)   obtaining more folic acid
D)   eating enough to feed two people
E)   moderate exerciseF) None of the above
G) D) and E)

Question 5

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

Accepted Answer

A) True 
 B)False

Question 6

The adhering follicular cells that surround the egg are called the

Accepted Answer

A)   pronuclei.
B)   zona pellucida.
C)   corona radiata.
D)   cortical granule cells.
E)   outer cell mass.F) A) and B)
G) B) and E)

Question 7

Which of the following develops into the male genital ducts?

Accepted Answer

A)   epididymis
B)   urogenital groove
C)   cloaca
D)   Mullerian ducts
E)   Wolffian ductsF) A) and E)
G) All of the above

Question 8

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 B)
G) C) and E)

Question 9

Which of the following is not associated with the egg?

Accepted Answer

A)   corona radiata
B)   acrosome
C)   zona pellucida
D)   cortical granule
E)   fertilization membraneF) B) and D)
G) A) and B)

Question 10

Which of the following is not derived from the endoderm?

Accepted Answer

A)   epithelial lining of the digestive tract
B)   epithelial lining of the respiratory tract
C)   glands of the digestive tract
D)   lining of the urinary bladder
E)   urinary systemF) D) and E)
G) A) and B)

Question 11

Development ceases at birth.

Accepted Answer

A) True 
 B)False

Question 12

Does a woman ovulate during pregnancy? Why or why not?

Accepted Answer

A)   No, because she doesn't have any more follicles in the ovaries.
B)   No, because negative feedback on the hypothalamus prevents new follicles from maturing.
C)   No, because the developing embryo prevents any new blastulas from implanting.
D)   Yes, because the uterine cycle continues to function.
E)   Yes, because the ovarian cycle continues to function.F) All of the above
G) A) and C)

Question 13

When cells begin to move in the embryo in relation to other cells,this is called

Accepted Answer

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

Question 14

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 15

Which part of the sperm contains the chromosomes?

Accepted Answer

A)   tail
B)   middle piece
C)   head
D)   cell membrane
E)   flagellaF) C) and D)
G) A) and C)

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 C)
G) A) and D)

Question 17

When the uterus begins to contract,it is almost time for the baby to be born.

Accepted Answer

A) True 
 B)False

Question 18

The embryonic disk becomes the inner cell mass after gastrulation.

Accepted Answer

A) True 
 B)False

Question 19

How are the pulmonary veins and the umbilical veins similar?

Accepted Answer

A)   They are both present in an adult human.
B)   They both carry blood to the lungs.
C)   They both connect to the superior vena cava.
D)   They both carry oxygen-rich blood.
E)   They both connect to the placenta.F) A) and C)
G) B) and E)

Question 20

At what point during development does the embryo form three germ layers?

Accepted Answer

A)   when it begins cleavage
B)   when the nervous system develops
C)   when it forms the gastrula
D)   when it forms the inner cell mass
E)   when it becomes recognizable as humanF) D) and E)
G) A) and C)

Exam 18: Development and Aging

The embryonic disk becomes the inner cell mass after gastrulation.

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Which part of the sperm contains the chromosomes?

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

Correct AnswerverifiedShow Answer

Development ceases at birth.

Correct AnswerverifiedShow Answer

Which of the following would be considered a poor health practice for a woman planning to get pregnant or already pregnant?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

At what point during development does the embryo form three germ layers?

Correct AnswerverifiedShow Answer

The adhering follicular cells that surround the egg are called the

Correct AnswerverifiedShow Answer

Which of the following is not associated with the egg?

Correct AnswerverifiedShow Answer

During fertilization,several sperm penetrate the corona radiata.

Correct AnswerverifiedShow Answer

Does a woman ovulate during pregnancy? Why or why not?

Correct AnswerverifiedShow Answer

Which of the following develops into the male genital ducts?

Correct AnswerverifiedShow Answer

When the uterus begins to contract,it is almost time for the baby to be born.

Correct AnswerverifiedShow Answer

Which of the following is not derived from the endoderm?

Correct AnswerverifiedShow Answer

When cells begin to move in the embryo in relation to other cells,this is called

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

How are the pulmonary veins and the umbilical veins similar?

Correct AnswerverifiedShow Answer

Why would you predict that the blood carbon dioxide levels in a pregnant woman would fall?

Correct AnswerverifiedShow Answer

At the end of the embryonic period,the embryo is about 12 inches long.

Correct AnswerverifiedShow Answer

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