Where does conception most commonly occur?
- A. None
- B. In the ampulla of the fallopian tube.
- C. None
- D. None
Correct Answer: B
Rationale: Fertilization typically occurs in the ampulla.
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What karyotype would the nurse anticipate for a patient with Klinefelter’s syndrome?
- A. XO
- B. XXY
- C. XYY
- D. XXX
Correct Answer: B
Rationale: The correct answer is B: XXY. In Klinefelter's syndrome, individuals have an extra X chromosome, resulting in a karyotype of 47,XXY. This leads to physical and cognitive characteristics associated with the syndrome. Choice A (XO) represents Turner syndrome, which involves a missing X chromosome. Choices C (XYY) and D (XXX) are not associated with Klinefelter's syndrome as they involve extra Y and X chromosomes respectively, leading to different syndromes altogether.
The nurse is educating the pregnant person on the effects of the placenta hormones. What information does the nurse include in the teaching about relaxin? Select all that apply.
- A. makes the ligaments softer and more flexible
- B. helps decrease peripheral vascular resistance
- C. plays a role in the appearance of the linea nigra
- D. helps the skin stretch
Correct Answer: C
Rationale: The correct answer is C because relaxin plays a role in the appearance of the linea nigra during pregnancy. Linea nigra is a dark line that runs from the belly button to the pubic bone caused by hormonal changes. Choices A, B, and D are incorrect. Relaxin primarily affects the cervix and pelvic ligaments, making them softer and more flexible to prepare for childbirth, but it does not help decrease peripheral vascular resistance or directly aid in skin stretching.
Match each term with its description. Blastocyst
- A. None
- B. None
- C. Part of the blastocyst that will develop into the placenta.
- D. None
Correct Answer: C
Rationale: Blastocyst contains structures forming the placenta.
A nurse is conducting prenatal education classes for a group of expectant parents. Which information should the nurse include in her discussion of the purpose of amniotic fluid? (Select all that apply.)
- A. Cushions the fetus
- B. Protects the skin of the fetus
- C. Provides nourishment for the fetus
- D. Allows for buoyancy for fetal movement
Correct Answer: A
Rationale: The correct answer is A: Cushions the fetus. Amniotic fluid acts as a cushion that protects the fetus from physical trauma and provides a stable environment for fetal growth. It helps prevent compression injuries and maintains a constant temperature. The other choices are incorrect because: B) Protects the skin of the fetus: While amniotic fluid does provide some protection, its main purpose is cushioning. C) Provides nourishment for the fetus: The placenta is responsible for providing nourishment to the fetus, not amniotic fluid. D) Allows for buoyancy for fetal movement: While amniotic fluid does allow for buoyancy, its primary function is to cushion the fetus.
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?
- A. It is a diamnionic, monochorionic twin gestation.
- B. It is a monoamnionic, monochorionic twin gestation.
- C. It is a monoamnionic, dichorionic twin gestation.
- D. It is a diamnionic, dichorionic twin gestation.
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.