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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?

A.

Cushions fetus from maternal movement.

B.

Provides thermoregulation.

C.

Metabolic and gas exchange.

D.

Provides a sterile environment.

Answer and Explanation

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.


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View Related questions

Correct Answer is B

Explanation

Choice A rationale

Not providing resources immediately may leave the patient feeling unsupported and isolated. It is important to offer resources and support to help the patient cope with the emotional and psychological impact of terminating a pregnancy due to a genetic abnormality.

Choice B rationale

Discussing the stages of grief is an appropriate nursing action. It helps the patient understand that their feelings are normal and provides a framework for processing their emotions. This support can be crucial in helping the patient navigate their grief and begin the healing process.

Choice C rationale

Encouraging the patient to rethink their decision is not appropriate. The decision to terminate a pregnancy due to a genetic abnormality is often difficult and deeply personal. It is important to respect the patient’s decision and provide support rather than questioning their choice.

Choice D rationale

Encouraging the couple not to share their emotions with each other can be harmful. Open communication between partners is essential for mutual support and understanding during such a challenging time. Encouraging them to share their feelings can strengthen their relationship and help them cope with the loss together.

Correct Answer is D

Explanation

Choice A rationale

A 25%-35% increase in blood volume is lower than the actual increase observed during pregnancy. This choice is incorrect.

Choice B rationale

A 10%-20% increase in blood volume is significantly lower than the actual increase observed during pregnancy. This choice is incorrect.

Choice C rationale

A 60%-70% increase in blood volume is higher than the actual increase observed during pregnancy. This choice is incorrect.

Choice D rationale

The correct percentage of increased blood volume during pregnancy is 40%-50%. This increase helps accommodate the growing fetus and placenta, and prepares the body for the blood loss that occurs during delivery.

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