Exam Review: Question 1Which of the following factors is not a

teratogen?

A. Environmental chemicalsB. Drugs taken by the mother during

pregnancyC. Multifactorial inheritanceD. Maternal factors

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Exam Review: Question 1 AnswerWhich of the following factors is not a

teratogen?

A. Environmental chemicalsB. Drugs taken by the mother during

pregnancyC. Multifactorial inheritanceD. Maternal factors

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Exam Review: Question 2Which of the following statements about human birth

defects is true?

A. During the organogenetic period, teratogenic agents disrupt development and cause major developmental abnormalities

B. Major anomalies are more common in newborn infants than in early embryos

C. Cigarette smoking during pregnancy do not have any effect on the developing embryo

D. Adrenal hyperplasia, resulting in androgen production in females do not cause masculinization of the external genitalia

 

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Exam Review: Question 2 AnswerWhich of the following statements about human birth

defects is true?

A. During the organogenetic period, teratogenic agents disrupt development and cause major developmental abnormalities

B. Major anomalies are more common in newborn infants than in early embryos

C. Cigarette smoking during pregnancy do not have any effect on the developing embryo

D. Adrenal hyperplasia, resulting in androgen production in females do not cause masculinization of the external genitalia

 

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Exam Review: Question 3During the first two weeks of

development, teratogenic agents usually kill the embryo or have no effect.

A.True

B.False 5

Exam Review: Question 3 AnswerDuring the first two weeks of

development, teratogenic agents usually kill the embryo or have no effect.

A.True

B.False 6

Exam Review: Question 4Congenital rubella syndrome (CRS),

characterized by cataracts, heart defects and deafness, is caused by an infective agent that infects the mother and crosses the placenta to cause maldevelopment in the fetus.

 

A.TrueB.False 

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Exam Review: Question 4 AnswerCongenital rubella syndrome (CRS),

characterized by cataracts, heart defects and deafness, is caused by an infective agent that infects the mother and crosses the placenta to cause maldevelopment in the fetus.

 

A.TrueB.False 

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Exam Review: Question 5Which of the terms listed below best

describes the following situation: chromosome 15 and 18 exchange genetic information?

A. DeletionB. MosaicC. TranslocationD. Inversion

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Exam Review: Question 5 AnswerWhich of the terms listed below best

describes the following situation: chromosome 15 and 18 exchange genetic information?

A. DeletionB. MosaicC. TranslocationD. Inversion

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Exam Review: Question 6An infant is born with cataracts, cardiac

defects and deafness. During the intrauterine period, the infant was most likely infected with:A. Treponema pallidumB. Toxoplasma gondiiC. Varicella-zoster virusD. CytomegalovirusE. Rubella virus

 

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Exam Review: Question 6 AnswerAn infant is born with cataracts, cardiac

defects and deafness. During the intrauterine period, the infant was most likely infected with:A. Treponema pallidumB. Toxoplasma gondiiC. Varicella-zoster virusD. CytomegalovirusE. Rubella virus

 

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Exam Review: Question 7An individual with pentasomy of the sex chromosomes would possess a total chromosome number of:

A.47B.48C.49D.50 

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Exam Review: Question 7 AnswerAn individual with pentasomy of the sex chromosomes would possess a total chromosome number of:

A.47B.48C.49D.50 

14*44 autosomes X, X, X, X, X

Exam Review: Question 8 Down syndrome is a result of meiotic non-disjunction of chromosome: A. 13B. 18C. 21D. X 

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Exam Review: Question 8 Answer Down syndrome is a result of meiotic non-disjunction of chromosome: A. 13B. 18C. 21D. X 

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Trisomy 21

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Exam Review: Question 9Congenital anomalies associated with trisomy 21 can be classified as a:

A. DisruptionB. Non-disjunctionC. DeformationD. Dysplasia

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Exam Review: Question 9 AnswerCongenital anomalies associated with trisomy 21 can be classified as a:

A. DisruptionB.Non-disjunctionC. DeformationD. Dysplasia

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Nondisjunction

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Exam Review: Question 10Which of the following is the most common

cause of human congenital anomalies?

A. Multifactorial inheritanceB. Chromosomal abnormalitiesC. Mutant genesD. Environmental agentsE. Unknown etiology

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Exam Review: Question 10 AnswerWhich of the following is the most common

cause of human congenital anomalies?

A. Multifactorial inheritanceB. Chromosomal abnormalitiesC. Mutant genesD. Environmental agentsE. Unknown etiology

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Causes of Human Congenital Anomalies or Birth Defects

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Exam Review: Question 11In dizygotic twins, zygotes that implant separately

and apart would be expected to have:A. Separate placentae and amniotic cavitiesB. A shared placenta and a common amniotic cavityC. A shared placenta and separate amniotic cavitiesD. Separate placentae but a common amniotic cavityE. A shared umbilical cord

 

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Exam Review: Question 11 AnswerIn dizygotic twins, zygotes that implant separately

and apart would be expected to have:A. Separate placentae and amniotic cavitiesB. A shared placenta and a common amniotic cavityC. A shared placenta and separate amniotic cavitiesD. Separate placentae but a common amniotic cavityE. A shared umbilical cord

 

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Exam Review: Question 11

Parturition is the earliest stage of placental development.A. TrueB. False 

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Exam Review: Question 11 ReviewParturition is the earliest stage of placental development.A. TrueB. False*“Parturition (childbirth) is the process during which

the fetus, placenta, and fetal membranes are expelled from the mother's reproductive tract.” Moore and Persuad. The Developing Human.

 

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Exam Review: Question 12Perinatology is the branch of medicine concerned with the well-being of both the fetus and newborn infant.A.TrueB.False

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Exam Review: Question 12 AnswerPerinatology is the branch of medicine concerned with the well-being of both the fetus and newborn infant.A.TrueB.False

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Exam Review: Question 13Intrauterine growth restriction can result from:A. Maternal vascular diseaseB. Intrauterine infectionC. Cigarette smokingD. Alcohol consumptionE. All of the above

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Exam Review: Question 13 AboveIntrauterine growth restriction can result from:A. Maternal vascular diseaseB. Intrauterine infectionC. Cigarette smokingD. Alcohol consumptionE. All of the above

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Exam Review: Question 14Which can be performed earlier in a pregnancy?

A. CVS

B. Amniocentesis 33

Exam Review: Question 14 AnswerWhich can be performed earlier in a pregnancy?

A. CVS

B. Amniocentesis 34

Exam Review: Question 15During the organogenetic period of the development, teratogens have very little affect on the embryo.

A. TrueB. False

 

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Exam Review: Question 15 AnswerDuring the organogenetic period of the development, teratogens have very little affect on the embryo.

A. TrueB. False

 

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Questions

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