Question 1

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

Accepted Answer

A) True 
 B)False

Question 2

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

Accepted Answer

A)   Males become infertile.
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) C) and D)
G) B) and E) D

Question 3

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) All of the above

Question 4

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) A) and D)
G) A) and B)

Question 5

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) B) and D)
G) A) and B)

Question 6

Which of the following does not occur prior to or during stage 1 of labor?

Accepted Answer

A)   bloody show
B)   effacement
C)   uterine contractions
D)   breaking water
E)   dislodging of the placentaF) C) and E)
G) None of the above E

Question 7

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 E)
G) All of the above

Question 8

Which of the following skin changes is not associated with growing older?

Accepted Answer

A)   Pigmented blotches appear on the skin.
B)   There is less adipose tissue in the subcutaneous layer.
C)   The number of elastic fibers decreases.
D)   There is an increase in the number of oil glands.
E)   There are fewer sweat glands for sweating to occur.F) A) and E)
G) All of the above

Question 9

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

Question 10

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

Question 11

Estrogen is responsible for the onset and continuation of labor.

Accepted Answer

A) True 
 B)False

Question 12

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

Question 13

When does the heart begin to develop?

Accepted Answer

A)   week 1
B)   week 3
C)   week 5
D)   week 7
E)   week 9F) A) and C)
G) All of the above

Question 14

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

Question 15

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

Accepted Answer

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

Question 16

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

Question 17

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

Question 18

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) None of the above
G) B) and E)

Question 19

What structure produces progesterone and estrogen during pregnancy?

Accepted Answer

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

Question 20

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

Accepted Answer

A) True 
 B)False

Exam 18: Development and Aging

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedD

Where are the mitochondria located in the sperm?

Correct AnswerverifiedShow Answer

How do males and females differ as they age?

Correct AnswerverifiedShow Answer

The adhering follicular cells that surround the egg are called the

Correct AnswerverifiedShow Answer

Which of the following does not occur prior to or during stage 1 of labor?

Correct AnswerverifiedE

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

Correct AnswerverifiedShow Answer

Which of the following skin changes is not associated with growing older?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedD

Estrogen is responsible for the onset and continuation of labor.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

When does the heart begin to develop?

Correct AnswerverifiedShow Answer

How are the pulmonary veins and the umbilical veins similar?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

What occurs during stage 3 of labor?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Which of the following is not associated with the egg?

Correct AnswerverifiedShow Answer

What structure produces progesterone and estrogen during pregnancy?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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D

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