Nokea
Fetal circulation includes 3 shunts. Match each shunt to its physiologic action. Foramen ovale
- A. Connects the pulmonary artery and the aorta, bypassing the lungs.
- B. Connects the right and left atria.
- C. Connects the right and left ventricles.
- D. Allows the umbilical vein to bypass the liver to flow into the inferior vena cava.
Correct Answer: B
Rationale: Foramen ovale connects the right and left atria.
You may also like to solve these questions
When should a woman start having pap smears?
- A. None
- B. At age 21.
- C. None
- D. None
Correct Answer: B
Rationale: Guidelines recommend starting pap smears at age 21.
What are the number and type of chromosomes in a normal mature gamete?
- A. 22 autosomes
- B. 22 autosomes and one sex chromosome
- C. 46 chromosomes
- D. 23 autosomes
Correct Answer: B
Rationale: Gametes have 22 autosomes and one sex chromosome, resulting in 23 chromosomes in total.
The nurse is conducting a staff in-service on multifetal pregnancy. Which statement regarding dizygotic twin development should the nurse include in the teaching session?
- A. Dizygotic twins arise from two fertilized ova and are the same sex.
- B. Dizygotic twins arise from a single fertilized ovum and are always of the same sex.
- C. Dizygotic twins arise from two fertilized ova and may be the same sex or different sexes.
- D. Dizygotic twins arise from a single fertilized ovum and may be the same sex or different sexes.
Correct Answer: C
Rationale: Dizygotic twins, also known as fraternal twins, result from the fertilization of two separate eggs by two sperm cells. Therefore, they have different genetic makeups and can be the same sex or different sexes. This is in contrast to monozygotic twins (identical twins), who arise from a single fertilized egg that splits into two embryos, resulting in twins of the same sex and identical genetic makeup. It is important for the nurse to include this information in the staff in-service on multifetal pregnancy to ensure accuracy and understanding among the attendees.
In which structure does fertilization usually occur?
- A. the ovary
- B. the uterus
- C. the fallopian tube
- D. the vagina
Correct Answer: C
Rationale: Fertilization typically occurs in the fallopian tube, where the sperm meets the ovum.
The nurse is counseling a female patient diagnosed with anovulation as a cause of infertility. Which information does the nurse provide to the patient? Select all that apply.
- A. Methods for dietary planning
- B. Consultation for myomectomy
- C. Refrain from unprotected sex
- D. Surgical correction of fallopian tubes
Correct Answer: A
Rationale: Methods for dietary planning and clomiphene citrate instructions are crucial for managing anovulation. The other options are unrelated or less effective for this condition.