5090092
Pregunta 1
Pregunta
Which of the following is incorrect?
Respuesta
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The respiratory and nervous systems are not functional at 28 weeks
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External genitalia are recognizable at 12 weeks
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Vascularization is visible at 12 weeks
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Rounded skull contours at 11 weeks
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none of the above
Pregunta 2
Pregunta
The time period for most elevated birth defect risk is between the 3rd and 8th weeks of gestation known as the embryonic period. The most common type of birth defect is from unknown causes
Respuesta
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Both true
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First true, second false
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First false, second true
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Both false
Pregunta 3
Pregunta
Which of the following is untrue about prenatal diagnoses?
Respuesta
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Ultrasonography uses high-frequency sound waves to assess growth and development and may be done transabdominally or transvaginally
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Maternal serum screening measures AFP which is produced in the fetal liver with production increasing until 30 weeks of gestation at which point production will decline.
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Amniocentesis is done transabdominally and also measures AFP and can result in cells collected for karyotyping.
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Chorionic villus sampling can be used to assess neural tube defects, genetic disorders, and chromosomal anomalies.
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None, these are all good
Pregunta 4
Pregunta
Which of the following is correct?
Respuesta
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Elevated AFP seen in neural tube defects
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Trisomy 18 manifests as reduced AFP, uE3, and hGC
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Down syndrome manifests as reduced AFP, uE3, and hGC, and inhibinA
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neural tube and trisomy 18
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all of the above
Pregunta 5
Pregunta
Which of the following is incorrect?
Respuesta
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Disruptions are morphological alterations of already formed structures
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Deformations result from mechanical forces that mold a part of the fetus
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A syndrome is a group of anomalies occurring together that have a common cause
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Deformations may be reversible
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Nah mate, it's all good.
Pregunta 6
Pregunta
The placenta's fetal component is derived from the trophoblast and extraembryonic endoderm. The maternal component comes from uterine endometrium.
Respuesta
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Both true
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First true, second false
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First false, second true
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Both false
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