Question 1

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

Accepted Answer

A) True 
 B)False

Question 2

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 radiataE) B) and D)
F) All of the above

Question 3

The nervous system develops enough to permit reflex actions during which period of development?

Accepted Answer

A)   pre-embryonic
B)   embryonic
C)   fetalD) All of the above
E) None of the above

Question 4

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

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) A) and E)

Question 6

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 D)
G) All of the above

Question 7

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

Accepted Answer

A) True 
 B)False

Question 8

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) All of the above
F) C) and D)

Question 9

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

Accepted Answer

A) True 
 B)False

Question 10

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

Accepted Answer

A)   Chorion appears.
B)   Nose, eyes, and ear become noticeable.
C)   Testes descend into scrotum.
D)   Heartbeat can be heard.
E)   Fingernails appear.F) None of the above
G) A) and C)

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) A) and B)

Question 12

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

Question 13

The yolk sac of the chick provides nutrients to the developing embryo.What does that in humans?

Accepted Answer

A)   chorion
B)   allantois
C)   yolk sac
D)   amnionE) A) and B)
F) A) and C)

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) B) and D)
G) B) and C)

Question 15

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 monthsE) All of the above
F) A) and B)

Question 16

What structure produces progesterone and estrogen during pregnancy?

Accepted Answer

A)   placenta
B)   hypothalamus
C)   anterior pituitary
D)   posterior pituitary
E)   ovariesF) C) and E)
G) A) and B)

Question 17

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) C) and E)

Question 18

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) A) and C)
G) A) and B)

Question 19

Which of the following statements is related to a decrease in blood flow?

Accepted Answer

A)   More neural cells are lost as we age.
B)   Females undergo menopause.
C)   Ventilation of the lungs is reduced.
D)   The liver does not metabolize drugs as efficiently as before.
E)   The homeostatic adjustment to heat is limited.F) A) and B)
G) B) and E)

Question 20

The embryonic disk becomes the inner cell mass after gastrulation.

Accepted Answer

A) True 
 B)False

Exam 17: Development and Aging

The embryonic disk becomes the inner cell mass after gastrulation.

Correct AnswerverifiedShow Answer

The yolk sac of the chick provides nutrients to the developing embryo.What does that in humans?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

The adhering follicular cells that surround the egg are called the

Correct AnswerverifiedShow Answer

The nervous system develops enough to permit reflex actions during which period of development?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

How are the pulmonary veins and the umbilical veins similar?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

What structure produces progesterone and estrogen during pregnancy?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

The umbilical arteries carry

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Which of the following statements is related to a decrease in blood flow?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

How do males and females differ as they age?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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