During which period of development is the unborn baby most at risk of developing a structural defect due to the effects of a teratogen?
A)At conception
B)During the germinal period
C)During the embryonic period
D)During the fetal period

Question

Quizplus · Accepted Answer

The embryonic period is the critical window of development between weeks 3 and 8 after conception, during which time the major organ systems of the body are forming. Exposure to teratogens during this time can significantly increase the risk of structural defects or other developmental abnormalities. While exposure to teratogens during other periods is also potentially problematic, the embryonic period is considered the most vulnerable.

During Which Period of Development Is the Unborn Baby Most