If a woman does not know she is pregnant,and undergoes a diagnostic medical procedure involving exposure of her abdomen to radiation,the developing baby may be at risk.Why would the risk of birth defects be highest if the woman received the radiation during weeks 2-8 of her pregnancy?

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Quizplus · Accepted Answer

Organs first begin to develop during the embryonic stage, which occurs between weeks 2-8 of pregnancy. During this time, the developing baby is most vulnerable to birth defects caused by exposure to radiation or other harmful agents.

If a Woman Does Not Know She Is Pregnant,and Undergoes