ATI RN
Fetal Development Questions Questions
Question 1 of 5
As relates to the structure and function of the placenta, the maternity nurse should be aware that:
Correct Answer: B
Rationale: Failed to generate a rationale of 500+ characters after 5 retries.
Question 2 of 5
The nurse is explaining the process of cell division during the preembryonic period to a group of nursing students. Which statement best describes the characteristics of the morula?
Correct Answer: D
Rationale: The correct answer is D because a morula is a solid ball composed of the first cells formed after fertilization. During the preembryonic period, the zygote undergoes several rounds of cell division to form a morula, which is a compact cluster of cells. A: is incorrect as a fertilized ovum is a zygote, not a morula. B: is incorrect as the double layer of cells that becomes the placenta is the bilaminar germ disc, not the morula. C: is incorrect as a flattened, disk-shaped layer of cells within a fluid-filled sphere describes the blastocyst, not the morula. Thus, the characteristics of a morula being a solid ball composed of the first cells formed after fertilization make option D the correct choice.
Question 3 of 5
Which statement best describes the changes that occur during the fetal period of development?
Correct Answer: A
Rationale: The correct answer is A because during the fetal period, organ systems continue to mature and develop to become fully functional. This includes refining the structures and functions of organs that have already been formed during the embryonic period. Option B is incorrect because basic organ systems are already formed during the embryonic period. Option C is incorrect as organs are still susceptible to damage during the fetal period. Option D is incorrect because the development of placental oxygen–carbon dioxide exchange primarily occurs during the early stages of pregnancy, not specifically during the fetal period.
Question 4 of 5
The nurse is assessing a newborn immediately after birth. After assigning the first Apgar score of 9, the nurse notes two vessels in the umbilical cord. What is the nurse’s next action?
Correct Answer: A
Rationale: The correct answer is A. The nurse should assess for other abnormalities of the infant because the presence of two vessels in the umbilical cord (a condition known as a two-vessel cord) may be associated with other congenital anomalies. By assessing for other abnormalities, the nurse can identify any potential issues that may require immediate intervention or further evaluation. This proactive approach ensures the newborn's well-being and allows for timely management of any additional concerns. Summary of other choices: B: Noting the finding in the chart is important but does not address the immediate need to assess for other abnormalities. C: Notifying the health care provider is important, but assessing for other abnormalities should be the nurse's initial priority. D: Calling for the neonatal resuscitation team is not necessary based solely on the presence of a two-vessel cord; further assessment is needed before determining the need for resuscitation.
Question 5 of 5
The nurse is explaining fetal circulation to a group of nursing students. Which information should be included in the teaching session? (Select all that apply.)
Correct Answer: C
Rationale: The correct answer is C: The ductus venosus shunts blood from the liver to the inferior vena cava. During fetal circulation, the ductus venosus allows oxygenated blood from the placenta to bypass the liver and flow directly into the inferior vena cava. This is important for fetal circulation as the liver is not fully functional in the fetus. After birth, the ductus venosus closes as the liver becomes fully operational. Rationale for incorrect choices: A: After birth, the ductus venosus closes, not remains open. B: The foramen ovale shunts blood from the right atrium to the left atrium, not related to the ductus venosus. D: This choice is a repetition of the correct information but incorrectly states the destination of the shunted blood.