Exposure to harmful substances is MOST likely to cause major structural damage to a fetus during the _____ stage of development.

Question

Quizplus · Accepted Answer

During the embryonic stage, which occurs from conception to around 8 weeks of development, the major organs and body systems are forming. Exposure to harmful substances such as drugs, alcohol, or viruses during this stage can cause structural damage or malformations in the developing fetus. The fetal stage, which occurs from 8 weeks to birth, is characterized by growth and refinement of existing structures rather than the formation of new ones. While exposure to harmful substances during the fetal stage can still have negative effects on the developing fetus, it is less likely to cause major structural damage compared to the embryonic stage. The germinal stage, which occurs from conception to 2 weeks of development, is too early for exposure to have a significant impact, and post-partum refers to after birth, so it is not relevant to the question.

Exposure to Harmful Substances Is MOST Likely to Cause Major