Which of the following is responsible for functions of the lungs and liver during fetal life?
The fetal brain
The maternal circulation
The umbilical cord
The placenta
The Correct Answer is D
A. The fetal brain:
Controls movement and growth but does not take over the functions of lungs and liver during fetal life.
B. The maternal circulation:
Supports the placenta but does not directly replace fetal lung/liver function.
C. The umbilical cord:
Serves as a conduit for blood exchange but doesn’t perform metabolic functions.
D. The placenta:
It performs gas exchange, nutrient transfer, and waste elimination, taking over the functions of the lungs and liver during fetal life.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
A. An enlarged uterus: Presumptive or probable sign; can occur in non-pregnancy conditions.
B. Quickening: Subjective, felt by mother; not definitive.
C. Positive pregnancy test: Probable sign, not definitive (false positives possible).
D. Fetal heart tones: A definitive (positive) sign of pregnancy.
Correct Answer is D
Explanation
A. Obtain a slide sample and look for fluid:
May help but less reliable unless seeing ferning under microscope.
B. Test the vaginal fluid with Dextrostix:
Dextrostix checks for glucose, not amniotic fluid.
C. Perform a VE during contraction:
Increases risk of infection, especially if ROM is suspected.
D. Test vaginal fluid with Nitrazine paper:
Nitrazine paper checks pH; amniotic fluid is alkaline and turns the paper blue.
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