In MOST cases, the greatest vulnerability to teratogens occurs during the _____ period of prenatal development.
A)embryonic
B)fetal
C)germinal
D)postnatal

Question

Quizplus · Accepted Answer

The embryonic period is the stage of prenatal development from 2 to 8 weeks after conception. This is when the basic structures and organs of the body are formed. It is during this time that the developing embryo is most vulnerable to teratogens, which can cause structural abnormalities, birth defects, and cognitive impairments. In contrast, the fetal period (weeks 9 to birth) is characterized by growth and maturation of the organs and systems that have already been formed, and while exposure to teratogens during this time can still have negative effects, the risks are generally lower compared to the embryonic period.

In MOST Cases, the Greatest Vulnerability to Teratogens Occurs During