Question 1

Few neural cells in the cerebral cortex are lost during the normal aging process.

Accepted Answer

A) True 
 B)False

Question 2

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

Accepted Answer

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

Question 3

When does the heart begin to develop?

Accepted Answer

A)  one week
B)  three weeks
C)  five weeks
D)  seven weeks
E)  nine weeksF) A) and E)
G) B) and E)

Question 4

Which part of the sperm contains the chromosomes?

Accepted Answer

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

Question 5

What occurs during stage 3 of labor?

Accepted Answer

A)  The cervix dilates.
B)  The baby is born.
C)  Effacement occurs.
D)  The amniotic sac ruptures.
E)  The placenta is expelled.F) B) and C)
G) B) and E)

Question 6

Which of the following is not involved in the increase in blood volume in a pregnant woman?

Accepted Answer

A)  progesterone
B)  artery expansion
C)  renin-angiotensin-aldosterone mechanism
D)  an increase in blood oxygen levels
E)  sodium and water retentionF) B) and D)
G) C) and D)

Question 7

Summarize the events that occur during each stage of birth.

Accepted Answer

Stage 1 is when the uterine contractions...

Question 8

Development ceases at birth.

Accepted Answer

A) True 
 B)False

Question 9

Which of the following is not true concerning the fetus during the third month of development?

Accepted Answer

A)  Bone begins to be replaced with cartilage in certain areas of the skeleton.
B)  The nose,eyes,and ears are present.
C)  Fingernails,nipples,eyelashes,eyebrows,and hair on the head appear.
D)  Head growth slows down as the rest of the body increases in length.
E)  It is possible to distinguish males from females.F) A) and B)
G) C) and E)

Question 10

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) All of the above
G) B) and E)

Question 11

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 E)
G) None of the above

Question 12

Sheila is experiencing contractions every 15 to 20 minutes that last for 40 seconds or longer.Is she ready to give birth?

Accepted Answer

Yes.This ...

Question 13

Which of the following is involved in the prevention of polyspermy?

Accepted Answer

A)  acrosome of the sperm
B)  depolarization of the egg's plasma membrane
C)  fusion of the sperm and egg nucleus
D)  changes within the corona radiata
E)  the number of chromosomes contained within the spermF) All of the above
G) None of the above

Question 14

The nervous system is to the ectoderm as the skeleton is to the

Accepted Answer

A)  mesoderm.
B)  endoderm.
C)  chorion.
D)  allantois.
E)  blastula.F) C) and E)
G) D) and E)

Question 15

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) B) and D)

Question 16

Estrogen is responsible for the onset and continuation of labor.

Accepted Answer

A) True 
 B)False

Question 17

Which of the following is not a chief effect of progesterone?

Accepted Answer

A)  increased uterine blood flow
B)  relaxation of smooth muscle
C)  reduced uterine motility
D)  reduced maternal immune response to fetus
E)  low blood pressureF) D) and E)
G) C) and E)

Question 18

During fertilization,several sperm penetrate the corona radiata.

Accepted Answer

A) True 
 B)False

Question 19

The names of the extraembryonic membranes are derived from their function in animals that produce shelled eggs.

Accepted Answer

A) True 
 B)False

Question 20

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 B)
G) All of the above

Exam 18: Development and Aging

Few neural cells in the cerebral cortex are lost during the normal aging process.

Correct AnswerverifiedShow Answer

During fertilization,several sperm penetrate the corona radiata.

Correct AnswerverifiedShow Answer

Which of the following defines "aging"?

Correct AnswerverifiedShow Answer

Which of the following is not a chief effect of progesterone?

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

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

Correct AnswerverifiedShow Answer

Sheila is experiencing contractions every 15 to 20 minutes that last for 40 seconds or longer.Is she ready to give birth?

Correct Answerverified Yes.This ...View AnswerShow Answer

What occurs during stage 3 of labor?

Correct AnswerverifiedShow Answer

The umbilical arteries carry

Correct AnswerverifiedShow Answer

Which part of the sperm contains the chromosomes?

Correct AnswerverifiedShow Answer

Development ceases at birth.

Correct AnswerverifiedShow Answer

The names of the extraembryonic membranes are derived from their function in animals that produce shelled eggs.

Correct AnswerverifiedShow Answer

Estrogen is responsible for the onset and continuation of labor.

Correct AnswerverifiedShow Answer

The nervous system is to the ectoderm as the skeleton is to the

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 does the heart begin to develop?

Correct AnswerverifiedShow Answer

Which of the following is not true concerning the fetus during the third month of development?

Correct AnswerverifiedShow Answer

Which of the following is not involved in the increase in blood volume in a pregnant woman?

Correct AnswerverifiedShow Answer

Which of the following is involved in the prevention of polyspermy?

Correct AnswerverifiedShow Answer

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Stage 1 is when the uterine contractions...
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Yes.This ...
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