ATI RN
Fetal Development Questions Questions
Question 1 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 2 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 3 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.
Question 4 of 5
The nurse is counseling a couple who just learned their 16-week fetus tested positive for a serious genetic disorder. Which action by the nurse is inappropriate upon learning that the couple plan to continue the pregnancy?
Correct Answer: A
Rationale: The correct answer is A because it respects the couple's decision-making autonomy. The nurse should support their choice to continue the pregnancy without suggesting termination. Providing information, emotional support, and connecting them with a support group are appropriate actions. It is crucial to respect the couple's decision and provide compassionate care regardless of their choice. The other choices are incorrect because they may undermine the couple's autonomy and may not be aligned with their wishes.
Question 5 of 5
A patient at 13 weeks gestation asks the nurse how her baby is nourished during pregnancy. Which information does the nurse use to explain the process to the mother?
Correct Answer: D
Rationale: Step-by-step rationale for choice D being correct: 1. Glucose, amino acids, and oxygen are essential nutrients for fetal growth. 2. These nutrients pass through the placenta from the mother's blood to the baby's blood. 3. This exchange occurs via diffusion and active transport processes. 4. The placenta acts as a barrier, filtering out harmful substances like waste products and CO2. 5. This process ensures the baby receives necessary nutrients for development. Summary of why other choices are incorrect: A: Fetal waste products and CO2 pass from the baby to the mother, not the other way around. B: The placenta facilitates nutrient and oxygen exchange but does not create them. C: The mother's and baby's blood do not mix; exchange of nutrients occurs through the placental barrier.