ATI RN
Conception and Fetal Development NCLEX Questions Questions
Question 1 of 5
Identify the obstetric health care providers who attend births in private homes. Select all that apply.
Correct Answer: A
Rationale: The correct answer is A: OB/GYN. Obstetricians are trained to provide care during pregnancy, labor, and delivery in various settings, including private homes. Family practice physicians and maternal-fetal medicine specialists typically work in hospitals. Certified nurse-midwives can attend home births, but they are not the only obstetric providers who do so. OB/GYNs have the necessary expertise and skills to manage complications that may arise during home births, making them suitable providers for this setting.
Question 2 of 5
Approximately 3 days after fertilization, what is the term for the developing zygote, which is a 16-cell mass?
Correct Answer: B
Rationale: The correct answer is B: Morula. At approximately 3 days post-fertilization, the zygote undergoes multiple cell divisions, forming a 16-cell mass known as a morula. This stage precedes the formation of a blastocyst, which occurs around day 5. The trophoblast refers to the outer layer of cells in the blastocyst responsible for implantation, while the embryoblast is the inner cell mass that gives rise to the embryo. Therefore, the morula stage accurately represents the 16-cell mass at this specific developmental timeline.
Question 3 of 5
Upon receiving report on a 36-week G1P0 patient, the nurse has been informed that the pregnancy is at high risk because the umbilical cords may become entangled. Which does the nurse understand about this pregnancy?
Correct Answer: B
Rationale: The correct answer is B: It is a monoamnionic, monochorionic twin gestation. In this type of pregnancy, twins share the same amniotic sac (monoamnionic) and placenta (monochorionic). This situation increases the risk of cord entanglement, leading to potential complications. The other choices are incorrect because they do not describe a pregnancy with the same level of risk for cord entanglement. Choice A, diamnionic, monochorionic, implies two amniotic sacs, reducing the risk of cord entanglement. Choice C, monoamnionic, dichorionic, describes a less risky scenario with two separate placentas. Choice D, diamnionic, dichorionic, indicates two separate sacs and placentas, also reducing the risk of cord entanglement.
Question 4 of 5
What is the hormone responsible for the maintenance of the endometrium during pregnancy and the maturation of mammary gland tissue?
Correct Answer: D
Rationale: The correct answer is D: Progesterone. Progesterone is essential for maintaining the endometrium during pregnancy by promoting its growth and preventing contractions. It also plays a crucial role in preparing the mammary glands for lactation. Estrogen (A) is important in the menstrual cycle but not specifically for maintaining the endometrium during pregnancy. Human chorionic gonadotropin (hCG) (B) is produced by the placenta and is primarily involved in supporting pregnancy and detecting pregnancy tests. Prolactin (C) is responsible for milk production but is not directly related to the maintenance of the endometrium or mammary gland tissue during pregnancy.
Question 5 of 5
What is the function of the yolk sac in early pregnancy?
Correct Answer: B
Rationale: The correct answer is B because the yolk sac in early pregnancy produces blood cells for the fetus. This is essential for the fetus's development as it helps in the formation of the circulatory system. The other choices are incorrect because: A: Providing antibodies to the developing fetus is typically done by the placenta, not the yolk sac. C: Hormones needed to support the pregnancy are mainly secreted by the placenta and other maternal structures, not the yolk sac. D: The yolk sac does not become the placenta; they are two distinct structures with different functions.