A nurse is reinforcing teaching with a newly licensed nurse about embryonic nutrition.
Which of the following statements by the newly licensed nurse indicates an understanding of the teaching?
Prior to the development of the placenta, the amnion provides nutrients.
The chorion supports development of the embryo.
The allantois will work to provide nutrients prior to the development of the placenta.
The yolk sac provides nutrients to the developing embryo.
The Correct Answer is D
Choice A rationale
The amnion is a membrane that encloses the amniotic fluid but does not provide nutrients to the embryo.
Choice B rationale
The chorion forms part of the placenta and contributes to nutrient and gas exchange once the placenta develops, but it does not provide nutrients before the placenta forms.
Choice C rationale
The allantois is involved in early fluid exchange and waste management but does not provide nutrients before the placenta forms.
Choice D rationale
The yolk sac provides nutrients to the developing embryo before the placenta is fully functional, supporting early embryonic development.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Choice A rationale
An increase in serum bilirubin levels indicates worsening hyperbilirubinemia rather than improvement. Effective phototherapy should result in a decrease in bilirubin levels as it helps break down bilirubin into a form that can be excreted.
Choice B rationale
Hemoglobin and hematocrit levels are not directly affected by phototherapy. These values are more related to red blood cell count and do not indicate the effectiveness of phototherapy for treating hyperbilirubinemia.
Choice C rationale
A decrease in transcutaneous bilirubin (TcB) levels from 6 hours ago indicates effective phototherapy. Phototherapy reduces bilirubin levels in the blood by converting it to a water-soluble form that can be eliminated from the body.
Choice D rationale
Jaundice typically moves from the head to the lower body as bilirubin levels decrease. Movement from chest to groin level without a corresponding decrease in bilirubin levels does not necessarily indicate effective phototherapy. .
Correct Answer is A
Explanation
Choice A rationale
Heavy vaginal bleeding at 39 weeks of gestation could be due to placental abruption or placenta previa, which necessitates immediate delivery to prevent maternal and fetal complications. Preparing for cesarean birth is crucial as it allows rapid delivery, reducing the risk of maternal hemorrhage and fetal hypoxia.
Choice B rationale
Performing a cervical examination can exacerbate bleeding in cases of placenta previa or placental abruption, making it unsafe. It can disturb the placenta and lead to further complications, so this option is not recommended.
Choice C rationale
Magnesium sulfate is used to prevent seizures in preeclampsia or eclampsia, not for managing heavy vaginal bleeding. Its use is unrelated to the immediate care of a client with heavy vaginal bleeding due to suspected placental issues.
Choice D rationale
Administering antibiotics is not the immediate priority in the case of heavy vaginal bleeding at 39 weeks of gestation. The focus should be on stabilizing the mother and preparing for delivery.
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