Assume a Pregnant Woman Is Exposed to a Specific Teratogen

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Examlex · Accepted Answer

The Answer is A teratogen is a substance or factor that can cause malformations or functional abnormalities in a developing fetus. One example of a teratogen is alcohol.

Exposure during week 3: The structures most likely to be affected during week 3 of pregnancy include the neural tube, which forms the brain and spinal cord. Exposure to a teratogen at this time could result in neural tube defects such as spina bifida or anencephaly.

Exposure during week 5: During week 5, the heart and limbs are forming. Exposure to a teratogen at this time could lead to heart defects or limb abnormalities.

Exposure during week 8: Week 8 is a critical time for organ development, including the eyes, ears, and facial features. A teratogen at this stage could result in facial abnormalities, such as cleft lip or palate, as well as vision or hearing problems.

Exposure during week 16: By week 16, the fetus's organs are continuing to develop and mature. Exposure to a teratogen at this time could lead to a range of structural abnormalities in various organs, including the heart, kidneys, and lungs.

Exposure during week 25: At week 25, the fetus is nearing the end of the second trimester and is rapidly growing and maturing. Exposure to a teratogen at this stage could still have significant effects on the developing organs, potentially leading to growth restriction, cognitive impairments, or other developmental delays.

Assume a Pregnant Woman Is Exposed to a Specific Teratogen

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