Question 1

In fetal circulation, blood bypasses the lungs by flowing through

Accepted Answer

A)  the umbilical vein and umbilical arteries.
B)  the fossa ovalis and umbilical arteries and vein.
C)  the foramen ovale and ductus arteriosus.
D)  the ductus venosus and ductus arteriosus.
E)  the ligamentum venosum and ligamentum arteriosum.F) A) and B)
G) B) and C)

Question 2

Premature infants suffer especially from multiple dysfunctions resulting from inadequate liver
function.

Accepted Answer

A) True 
 B)False

Question 3

During implantation, the trophoblast divides into a deep layer, the , composed of individual cells, and a superficial layer, the , composed of a multinucleate mass of cytoplasm.

Accepted Answer

A)  chorion; amnion
B)  chorion; embryoblast
C)  syncytiotrophoblast; cytotrophoblast
D)  cytotrophoblast; syncytiotrophoblast
E)  embryoblast; amnionF) A) and B)
G) A) and C)

Question 4

Older people may require lower drug doses than younger people because

Accepted Answer

A)  their organs are more sensitive to drugs.
B)  they have lower rates of renal clearance.
C)  they do not absorb as much drug from the small intestine.
D)  there is less tissue mass to treat.
E)  a lifetime of mutations results in unpredictable drug reactions.F) A) and E)
G) A) and B)

Question 5

Which of these lists the stages or structures of prenatal development in the correct order?

Accepted Answer

A)  cleavage, zygote, morula, blastocyst, embryo, fetus
B)  zygote, morula, blastocyst, cleavage, embryo, fetus
C)  zygote, cleavage, morula, blastocyst, embryo, fetus
D)  zygote, embryo, morula, blastocyst, cleavage, fetus
E)  embryo, zygote, blastocyst, cleavage, morula, fetusF) A) and E)
G) C) and D)

Question 6

The encloses all the rest of the membranes and the embryo.

Accepted Answer

A)  chorion
B)  allantois
C)  yolk sac
D)  amnion
E)  zona pellucidaF) A) and D)
G) A) and E)

Question 7

Primary germ layers are formed during

Accepted Answer

A)  implantation.
B)  cleavage.
C)  conception.
D)  organogenesis.
E)  gastrulation.F) C) and D)
G) C) and E)

Question 8

pass(es)  from the maternal blood to the fetal blood; while fetal pass(es)  the other way.

Accepted Answer

A)  Carbon dioxide and oxygen; wastes
B)  Carbon dioxide; nutrients
C)  Wastes; nutrients and oxygen
D)  Wastes and nutrients; oxygen and carbon dioxide
E)  Oxygen and nutrients; wastesF) C) and D)
G) A) and C)

Question 9

The spheroidal stage of early prenatal development with about 16 to 64 cells is called a/an

Accepted Answer

A)  zygote.
B)  embryo.
C)  blastomere.
D)  morula.
E)  blastocyst.F) C) and E)
G) B) and E)

Question 10

Twins produced when a single egg is fertilized are called twins, and twins produced from two eggs ovulated at the same time are called twins.

Accepted Answer

A)  monozygotic; identical
B)  dizygotic; nonidentical
C)  monozygotic; dizygotic
D)  dizygotic; monozygotic
E)  nonidentical; identicalF) B) and D)
G) All of the above

Question 11

The process that makes it possible for sperm to penetrate the egg is called

Accepted Answer

A)  sperm migration.
B)  capacitation.
C)  the cortical reaction.
D)  morulation.
E)  cleavage.F) B) and D)
G) A) and D)

Question 12

The observation that there is a limit to how many times a cell can divide is the basis for the

Accepted Answer

A)  autoimmune theory of senescence.
B)  free radical theory of senescence.
C)  cross-linking theory of senescence.
D)  replicative senescence theory.
E)  abortive theory of senescence.F) A) and C)
G) B) and E)

Question 13

Which one of these organ systems shows the greatest anatomical change in the transitional period after birth?

Accepted Answer

A)  muscular
B)  integumentary
C)  skeletal
D)  circulatory
E)  nervousF) C) and D)
G) A) and D)

Question 14

Oxygenated blood reaches the fetus through the

Accepted Answer

A)  umbilical vein.
B)  umbilical arteries.
C)  maternal vein.
D)  maternal arteries.
E)  placental sinus.F) D) and E)
G) C) and D)

Question 15

These are have potentially teratogenic effects except

Accepted Answer

A)  smoking.
B)  alcohol.
C)  infectious diseases.
D)  sunlight.
E)  X-rays.F) A) and E)
G) A) and B)

Question 16

This figure shows the placenta and embryonic membranes.What does "1" represent?

Accepted Answer

A)  a maternal vein
B)  a maternal artery
C)  an umbilical vein
D)  an umbilical artery
E)  a placental sinusF) None of the above
G) A) and E)

Question 17

Cleavage results in daughter cells containing half the number of chromosomes of the parent cell.

Accepted Answer

A) True 
 B)False

Question 18

The optimal "window of opportunity" to conceive a child is

Accepted Answer

A)  a few days before ovulation to less than a day after.
B)  less than a day before ovulation to less than a day after.
C)  a few days before ovulation to a few days after.
D)  a few days before ovulation.
E)  a few days after ovulation.F) B) and E)
G) B) and C)

Question 19

These are derivatives of ectoderm except

Accepted Answer

A)  the salivary glands.
B)  the nervous system.
C)  the epidermis.
D)  the cutaneous glands.
E)  the dermis.F) A) and E)
G) B) and E)

Question 20

In the blastocyst, the trophoblast will become , whereas the embryoblast will become .

Accepted Answer

A)  part of the placenta; the yolk sac
B)  part of the placenta; the embryo
C)  the embryo; part of the placenta
D)  the embryo; the yolk sac
E)  the yolk sac; the embryoF) C) and D)
G) B) and D)

Exam 29: Human Development and Aging

These are derivatives of ectoderm except

Correct AnswerverifiedShow Answer

In fetal circulation, blood bypasses the lungs by flowing through

Correct AnswerverifiedShow Answer

In the blastocyst, the trophoblast will become , whereas the embryoblast will become .

Correct AnswerverifiedShow Answer

pass(es) from the maternal blood to the fetal blood; while fetal pass(es) the other way.

Correct AnswerverifiedShow Answer

Primary germ layers are formed during

Correct AnswerverifiedShow Answer

The encloses all the rest of the membranes and the embryo.

Correct AnswerverifiedShow Answer

Cleavage results in daughter cells containing half the number of chromosomes of the parent cell.

Correct AnswerverifiedShow Answer

Which of these lists the stages or structures of prenatal development in the correct order?

Correct AnswerverifiedShow Answer

Oxygenated blood reaches the fetus through the

Correct AnswerverifiedShow Answer

During implantation, the trophoblast divides into a deep layer, the , composed of individual cells, and a superficial layer, the , composed of a multinucleate mass of cytoplasm.

Correct AnswerverifiedShow Answer

The process that makes it possible for sperm to penetrate the egg is called

Correct AnswerverifiedShow Answer

Twins produced when a single egg is fertilized are called twins, and twins produced from two eggs ovulated at the same time are called twins.

Correct AnswerverifiedShow Answer

The optimal "window of opportunity" to conceive a child is

Correct AnswerverifiedShow Answer

The spheroidal stage of early prenatal development with about 16 to 64 cells is called a/an

Correct AnswerverifiedShow Answer

Older people may require lower drug doses than younger people because

Correct AnswerverifiedShow Answer

Which one of these organ systems shows the greatest anatomical change in the transitional period after birth?

Correct AnswerverifiedShow Answer

Premature infants suffer especially from multiple dysfunctions resulting from inadequate liver function.

Correct AnswerverifiedShow Answer

The observation that there is a limit to how many times a cell can divide is the basis for the

Correct AnswerverifiedShow Answer

This figure shows the placenta and embryonic membranes.What does "1" represent?

Correct AnswerverifiedShow Answer

These are have potentially teratogenic effects except

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified