71.In which type of prenatal testing is a grainy picture of the fetus generated that allows for identification of the child’s position and, at a certain point, its sex?
a.amniocentesisc.ultrasound
b.chorionic villus samplingd.transvaginal magnetic resonance imaging
72.Which of the following is a relative limitation of the use of an ultrasound?
a.It requires an instrument so large that is impractical to have in most physicians’ offices.
b.It is notoriously unreliable at accurately identifying the sex of the child prior to birth.
c.It carries a 1% chance of inducing a miscarriage.
d.It gives a very grainy picture that takes an expert’s eyes to interpret.
73.Randi is pregnant for the first time. Given the frequency with which twins and triplets have occurred in her family, she is understandably concerned that she will have a multiple-birth pregnancy. If you were her gynecologist, which of the following prenatal tests would you recommend to either confirm or rule out the number of babies she is carrying?
a.quadruple maternal blood testc.chorionic villus sampling
b.amniocentesisd.ultrasound
74.If you were most interested in knowing the genotype of your unborn baby, perhaps to find out if there were specific genetic or chromosomal problems, which prenatal test would be most appropriate?
a.ultrasoundc.amniocentesis
b.maternal glucose testd.chorionic villus sampling
75.If you are pregnant and want to get a prenatal test to assess various aspects of your unborn child’s well-being, which of the following should you avoid if you suffer from trypanophobia (or the fear of needles)?
a.amniocentesisc.chorionic villus sampling
b.ultrasoundd.fetal cardiac monitoring
76.A procedure that involves removing a sample of tissue from part of the placenta that is done 9 to 12 weeks into a pregnancy is called
a.amniocentesis.c.ultrasound.
b.chorionic villus sampling.d.maternal glucose test.
77.Why would a person be naturally concerned about undergoing an amniocentesis or chorionic villus sampling during their pregnancy?
a.Because a miscarriage is 1–2% more likely after these tests.
b.Because the results from both tests take two to four weeks to obtain.
c.Because they are both rather painful, while an ultrasound is noninvasive and painless.
d.Because they both carry an unacceptable rate of “false positive” results.
78.Troy is very interested in the field of fetal medicine. Given this, he would most likely be fascinated by a book titled
a.Afterbirth Care and You.
b.The Benefits of Healthy Eating Before Pregnancy.
c.Fixing Birth Defects Before Birth.
d.The Importance of Childhood Inoculations.
79.What is the current status of the use of genetic engineering to help treat illnesses that are caused by defective genes?
a.Genetic engineering is still illegal in the United States, though other countries are using it on a routine basis.
b.Genetic engineering has been found useful for metabolic disorders, but only when employed prior to the fetal stage of prenatal development.
c.Some successful applications of genetic engineering have been seen with older children.
d.Genetic engineering has never been successfully used in animals or human beings, but the theories are sound and research is ongoing.
80.How many stages of labor are there?
a.1c.5
b.3d.7
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