Question 1

The embryonic disk becomes the inner cell mass after gastrulation.

Accepted Answer

A) True 
 B)False

Question 2

Which part of the sperm contains the chromosomes?

Accepted Answer

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

Question 3

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

Accepted Answer

The answer of Sheila is experiencing contractions every 15 to...

Question 4

Estrogen is responsible for the onset and continuation of labor.

Accepted Answer

A) True 
 B)False

Question 5

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 D)
G) C) and E)

Question 6

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 D)
G) B) and E)

Question 7

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) D) and E)
G) A) and D)

Question 8

The blood of the mother and the fetus mix in the placenta.

Accepted Answer

A) True 
 B)False

Question 9

The _______ is the first embryonic membrane to appear, and it is the first site of ___________.

Accepted Answer

A)   amnion, umbilical cord formation
B)   yolk sac, placenta development
C)   chorion, neural system development
D)   allantois, amniotic fluid formation
E)   yolk sac, blood cell formationF) A) and B)
G) B) and E)

Question 10

Where are the mitochondria located in the sperm?

Accepted Answer

A)   tail
B)   middle piece
C)   head
D)   nucleus
E)   cell membraneF) A) and E)
G) A) and D)

Question 11

How do males and females differ as they age?

Accepted Answer

A)   Females undergo menopause but males do not undergo any changes in their reproductive hormone levels.
B)   Males can continue to produce sperm until death but females do not continue to produce eggs.
C)   Males develop urinary incontinence but females do not.
D)   Males lose skeletal muscle mass but females tend to gain muscle mass.
E)   Females dehydrate faster than males do.F) B) and D)
G) C) and E)

Question 12

The first system in the body to become visibly differentiated during development is the

Accepted Answer

A)   digestive system.
B)   cardiovascular system.
C)   respiratory system.
D)   nervous system.
E)   reproductive system.F) B) and D)
G) A) and B)

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)   weeks 1-4F) A) and E)
G) A) and D)

Question 14

Summarize the events that occur during each stage of birth.

Accepted Answer

Stage 1 is when the uterine contractions...

Question 15

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 E)
G) A) and E)

Question 16

Describe the steps in fertilization of an egg cell.

Accepted Answer

Answer : 1. Sperm makes its way through ...

Question 17

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

Accepted Answer

A) True 
 B)False

Question 18

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) A) and C)
G) All of the above

Question 19

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) B) and E)
G) A) and B)

Question 20

Once the cortical granules release their enzymes, the corona radiata becomes the fertilization membrane.

Accepted Answer

A) True 
 B)False

Exam 17: Human Development and Aging

Where are the mitochondria located in the sperm?

Correct AnswerverifiedShow Answer

The embryonic disk becomes the inner cell mass after gastrulation.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Which part of the sperm contains the chromosomes?

Correct AnswerverifiedShow Answer

How do males and females differ as they age?

Correct AnswerverifiedShow Answer

Estrogen is responsible for the onset and continuation of labor.

Correct AnswerverifiedShow Answer

The first system in the body to become visibly differentiated during development is 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 does the mother first begin to feel the fetus move?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

The blood of the mother and the fetus mix in the placenta.

Correct AnswerverifiedShow Answer

The _______ is the first embryonic membrane to appear, and it is the first site of ___________.

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

Once the cortical granules release their enzymes, the corona radiata becomes the fertilization membrane.

Correct AnswerverifiedShow Answer

Which of the following defines "aging"?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

How are the pulmonary veins and the umbilical veins similar?

Correct AnswerverifiedShow Answer

Describe the steps in fertilization of an egg cell.

Correct AnswerverifiedAnswer : 1. Sperm makes its way through ...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 AnswerverifiedShow Answer

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Stage 1 is when the uterine contractions...
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The _ is the first embryonic membrane to appear, and it is the first site of _____.

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Answer : 1. Sperm makes its way through ...
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