Nokea
The nurse is teaching a class about embryonic and fetal development to couples in the early stage of pregnancy. For which reason does the nurse emphasize the first 8 weeks of gestation?
- A. Pregnancies often abort before or at this time of development.
- B. Lack of size and movement prevents confirmation of pregnancy.
- C. All organ systems are developing during this period.
- D. Factors that can interrupt the pregnancy are no longer a concern.
Correct Answer: C
Rationale: The first 8 weeks are critical as all organ systems are developing, making it a sensitive period for any interruptions.
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The nurse is explaining the function of the placenta to a pregnant patient. Which statement indicates to the nurse that further clarification is necessary?
- A. “My baby gets oxygen from the placent
- B. “The placenta functions to help excrete waste products.”
- C. “The nourishment that I take in passes through the placent
- D. The placenta helps maintain a stable temperature for my baby.”
Correct Answer: D
Rationale: While the statement "The nourishment that I take in passes through the placenta" is generally correct in the context of the placenta providing nutrients to the fetus, it does not fully convey the process accurately. The primary function of the placenta is to facilitate the exchange of oxygen, nutrients, and waste products between the mother and the fetus through the mother's blood supply. It is not a direct passage of nourishment that the mother takes in; rather, it involves a complex process of diffusion and transport to ensure the fetus receives the necessary nutrients and oxygen. Therefore, further clarification is needed to ensure the patient has a complete understanding of this essential function of the placenta.
Match each term with its description. Embryoblast
- A. None
- B. None
- C. The fertilized egg as it separates into 2 parts, the embryoblast and trophoblast.
- D. None
Correct Answer: C
Rationale: Embryoblast is part of the developing embryo.
What hormone stimulates ovulation?
- A. None
- B. Luteinizing hormone (LH).
- C. None
- D. None
Correct Answer: B
Rationale: LH surge triggers ovulation.
What occurs in the intervillous space in the developing placenta?
- A. None
- B. Oxygen and nutrients perfuse across the chorion villi to enter fetal circulation.
- C. None
- D. None
Correct Answer: B
Rationale: This is the primary function of the intervillous space.
The nurse works in an infertility clinic and is interviewing a male patient whose partner has been unable to conceive. Which finding obtained during a health history will cause the nurse greatest concern?
- A. The patient is a passionate gardener.
- B. The patient had a vasectomy reversed.
- C. The patient rides a bicycle daily to work.
- D. The patient is concerned about infertility.
Correct Answer: B
Rationale: A vasectomy reversal can lead to the development of antibodies that reduce sperm motility, impacting fertility.