A nurse is caring for a primigravida who asks about the function of the placenta. The nurse responds correctly when explaining which of the following are functions of the placenta?
Cushions fetus from maternal movement.
Provides thermoregulation.
Metabolic and gas exchange.
Provides a sterile environment.
The Correct Answer is C
Choice A rationale
The placenta does not cushion the fetus from maternal movement. Instead, the amniotic fluid within the amniotic sac provides cushioning and protection to the fetus from external forces and maternal movements.
Choice B rationale
The placenta does not provide thermoregulation. Thermoregulation is primarily managed by the mother’s body. The placenta’s main functions are related to nutrient and gas exchange, hormone production, and waste removal.
Choice C rationale
The placenta is responsible for metabolic and gas exchange. It provides oxygen and nutrients to the fetus while removing waste products from the fetal blood. This exchange occurs through the placental barrier, which separates maternal and fetal blood.
Choice D rationale
The placenta does not provide a sterile environment. The amniotic sac and its fluid help maintain a sterile environment for the fetus. The placenta’s role is more focused on nutrient and gas exchange, hormone production, and waste removal.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Choice A rationale
The uterus can indeed increase in size by 20 times its non-pregnant size. This significant expansion is necessary to accommodate the growing fetus and the increased blood supply required during pregnancy.
Choice B rationale
While the weight of the uterus does increase significantly during pregnancy, from about 100 grams to approximately 1,000 grams, this statement does not directly address the client’s concern about the uterus’s ability to stretch.
Choice C rationale
About 25% of the increased capacity of the uterus is related to uteroplacental content, but this does not fully explain the uterus’s ability to stretch to accommodate a full-term baby.
Choice D rationale
The increase in uterus size during pregnancy is not solely related to amniotic fluid volume. The uterus itself grows and stretches significantly to accommodate the developing fetus.
Correct Answer is C
Explanation
Choice A rationale
Changing professions is not necessary solely due to pregnancy. However, it is important to consider the specific risks associated with the current job. In this case, the client works in a hair and nail salon, which may expose her to various chemicals and environmental toxins. These toxins can pose risks to both the mother and the developing fetus. Therefore, the focus should be on minimizing exposure to these hazards rather than changing professions altogether.
Choice B rationale
While it is important to be mindful of weight limits during pregnancy to avoid strain and injury, this is not the primary concern for a client working in a hair and nail salon. The main risk in this scenario is exposure to environmental toxins, which can have more significant implications for the health of the mother and the developing fetus.
Choice C rationale
Exposure to environmental toxins is a significant concern for pregnant women working in hair and nail salons. These environments often contain chemicals such as formaldehyde, toluene, and phthalates, which can be harmful to both the mother and the developing fetus. Educating the client about the risks associated with these toxins and providing guidance on how to minimize exposure is crucial for ensuring a healthy pregnancy.
Choice D rationale
While reducing the number of clients seen in a day may help manage physical strain and fatigue, it does not address the primary concern of exposure to environmental toxins. The focus should be on minimizing contact with harmful chemicals and ensuring a safe working environment for the pregnant client.
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