Question 1

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

Question 2

Where are the mitochondria located in the sperm?

Accepted Answer

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

Question 3

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

Question 4

The embryonic disk becomes the inner cell mass after gastrulation.

Accepted Answer

A) True 
 B)False

Question 5

Which hypothesis of aging involves mitochondria?

Accepted Answer

A)  genetic in origin
B)  whole-body process
C)  extrinsic factors
D)  damage accumulation
E)  external factorsF) B) and C)
G) A) and E)

Question 6

Fetal development includes the third through ninth months of development.

Accepted Answer

A) True 
 B)False

Question 7

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 B)
G) A) and C)

Question 8

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

Question 9

Which of the following problems is not associated with pregnancy?

Accepted Answer

A)  lordosis
B)  lower back pain
C)  gastrointestinal reflux
D)  incontinence
E)  impotenceF) C) and E)
G) A) and E) E

Question 10

Embryonic development begins with

Accepted Answer

A)  fertilization.
B)  the first cell division.
C)  the development of the blastocyst.
D)  implantation.
E)  gastrulation.F) B) and E)
G) C) and D)

Question 11

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

Accepted Answer

A) True 
 B)False

Question 12

Which of these is associated with pre-embryonic development?

Accepted Answer

A)  morula
B)  embryonic disk
C)  gastrulation
D)  primary germ layers
E)  formation of the umbilical cordF) None of the above
G) A) and D)

Question 13

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) D) and E)
G) C) and D)

Question 14

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 B)
G) A) and D)

Question 15

Describe the steps in fertilization of an egg cell.

Accepted Answer

1.Sperm makes its way through the corona...

Question 16

What structure produces progesterone and estrogen during pregnancy?

Accepted Answer

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

Question 17

Most birth defects are due to the inheritance of an abnormal number of chromosomes.

Accepted Answer

A) True 
 B)False

Question 18

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

Question 19

The white,greasy,cheeselike substance that covers the skin is called

Accepted Answer

A)  lanugo.
B)  fontanels.
C)  vernix caseosa.
D)  foramen ovale.
E)  ductus arteriosus.F) None of the above
G) All of the above C

Question 20

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

Exam 18: Development and Aging

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

Correct AnswerverifiedShow Answer

Where are the mitochondria located in the sperm?

Correct AnswerverifiedB

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

Correct AnswerverifiedShow Answer

The embryonic disk becomes the inner cell mass after gastrulation.

Correct AnswerverifiedShow Answer

Which hypothesis of aging involves mitochondria?

Correct AnswerverifiedShow Answer

Fetal development includes the third through ninth months of development.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Which of the following problems is not associated with pregnancy?

Correct AnswerverifiedE

Embryonic development begins with

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Which of these is associated with pre-embryonic development?

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

Describe the steps in fertilization of an egg cell.

Correct Answerverified1.Sperm makes its way through the corona...View AnswerShow Answer

What structure produces progesterone and estrogen during pregnancy?

Correct AnswerverifiedShow Answer

Most birth defects are due to the inheritance of an abnormal number of chromosomes.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

The white,greasy,cheeselike substance that covers the skin is called

Correct AnswerverifiedC

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

Correct AnswerverifiedShow Answer

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E

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1.Sperm makes its way through the corona...
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C

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