When a couple has unprotected sexual intercourse 3 days before the woman ovulates, the risk of the woman becoming pregnant is:

Very low because that is not the woman's fertile period.

Uncertain because the ovum lives only for 24 hours.

Unknown because the ovum lives only for 24 hours.

Very low because the woman may not ovulate at all.

Answer and Explanation

The Correct Answer is B

A. This statement is incorrect because sperm can survive inside the female reproductive tract for up to 5 days, meaning intercourse before ovulation can still result in pregnancy.

B. Uncertain is correct because while the egg does live only for about 24 hours after ovulation, sperm can survive for several days. Thus, intercourse 3 days before ovulation could still lead to pregnancy if sperm are still viable when the egg is released.

C. The ovum's survival time is generally known, so the risk is based on sperm viability and timing, not uncertainty about the egg.

D. While ovulation is necessary for conception, predicting it with certainty is not always possible, so this option is not entirely accurate.

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Correct Answer is A

Explanation

A. Deepening pigmentation, such as changes in the skin like melasma or linea nigra, is considered a presumptive sign of pregnancy, as it is subjective and not specific to pregnancy alone.

B. Abdominal enlargement is a probable sign of pregnancy as it is more objective and can be caused by the growing uterus. However, it may also occur due to other conditions, such as tumors or fluid accumulation.

C. Ballottement, a sensation felt when the fetus rebounds after being pushed gently, is a probable sign of pregnancy due to its reliance on the presence of a fetus.

D. A positive pregnancy test result is a probable sign because it detects hCG levels, which are strongly associated with pregnancy but may also be elevated in other conditions.

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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When a couple has unprotected sexual intercourse 3 days before the woman ovulates, the risk of the woman becoming pregnant is:

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