A nurse is assisting in the care of a client at 10 weeks of gestation who asks how the biological sex of the fetus is determined. Which of the following responses should the nurse make?

"Biological sex is determined when the zygote experiences implantation"

“Biological sex is determined by the specific combination of sex chromosomes present in the DNA.”

“Biological sex is determined when cell division takes place within the foramen ovale”

"Biological sex is determined when the blastocyst forms during fertilization."

Answer and Explanation

The Correct Answer is B

A. Implantation of the zygote does not affect the determination of biological sex. The biological sex is already determined at the time of fertilization.

B. Sex chromosomes (XX for female and XY for male) determine biological sex. This combination is established at fertilization when the sperm and egg combine to form the zygote.

C. The foramen ovale is a hole in the fetal heart that allows blood to bypass the lungs in utero and is unrelated to the determination of biological sex.

D. The blastocyst formation is an early developmental stage after fertilization but does not determine biological sex. It is the combination of sex chromosomes that determines whether the fetus is male or female.

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Correct Answer is A

Explanation

A. 110 to 160/min is the normal range for a fetal heart rate at 12 weeks of gestation. The fetal heart rate tends to be higher early in pregnancy and stabilizes within this range by the second trimester.

B. 100 to 110/min is too low for a normal fetal heart rate.

C. 160 to 190/min is above the normal range and may suggest tachycardia, which requires further investigation.

D. 80 to 100/min is too low for a typical fetal heart rate and would be considered bradycardia, which could indicate a concern.

A. The testes being too warm B. The penis and testes being small C. Infrequent sexual intercourse D. The man not being circumcised

Correct Answer is A

Explanation

A. Sperm production is temperature-sensitive, and the testes require a slightly cooler environment than the rest of the body. Increased warmth, such as from tight clothing, prolonged sitting, or heat exposure, can impair spermatogenesis.

B. The size of the penis and testes is not directly correlated with sperm production. The functionality of the testes, not their size, determines sperm output.

C. Infrequent sexual intercourse can affect fertility by decreasing opportunities for conception but does not directly decrease sperm production.

D. Circumcision status does not affect sperm production, as it primarily pertains to hygiene and the prevention of certain infections.

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A nurse is assisting in the care of a client at 10 weeks of gestation who asks how the biological sex of the fetus is determined. Which of the following responses should the nurse make?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

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Correct Answer is A

Explanation

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Correct Answer is A

Explanation

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