What statement indicates a woman has correct information about oogenesis?
"Women have all of their ova at the time they are born."
"Women make fewer ova as they age."
"Ova production begins at birth and continues until puberty."
"New ova are made every month from puberty to climacteric."
The Correct Answer is A
A. Women have all of their ova at birth. Oogenesis, the process of egg development, occurs in the fetus, and women are born with all the eggs (ova) they will ever have. The number of eggs decreases over time.
B. Women make fewer ova as they age is correct in a sense, but the statement is misleading because the number of eggs actually decreases after birth, not through an ongoing process of "making fewer."
C. Ova production begins at birth and continues until puberty is incorrect. Ova are formed during fetal development, but no new eggs are produced after birth.
D. New ova are made every month from puberty to climacteric is incorrect. While ova mature and are released monthly during a woman's reproductive years, they are not newly made each month. The ovary contains a finite number of immature eggs at birth.
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Related Questions
Correct Answer is B
Explanation
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.
Correct Answer is C
Explanation
A. Procoagulant factors, not decreased procoagulant factors, increase during pregnancy, which contributes to a hypercoagulable state.
B. Natural anticoagulants, such as antithrombin, tend to decrease during pregnancy, which actually heightens the risk of clot formation rather than mitigating it.
C. Increased blood plasma volume and elevated levels of clotting factors during pregnancy contribute to a hypercoagulable state. This adaptation helps prevent excessive bleeding during childbirth but also increases the risk of thrombosis.
D. Platelet counts do not typically increase during pregnancy; in fact, they may slightly decrease due to hemodilution, though their function remains intact.
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