Exposure to toxins during weeks 3 to 5 during a pregnancy would be most likely to result in defects in which of the body's organs?
A) the brain
B) the ears
C) the heart
D) the genitalia (sexual organs)

Question

Quizplus · Accepted Answer

As shown on the chart on page 75, the heart is susceptible to teratogens during weeks 3 to 5. The brain, ears, and genitalia are not generally susceptible until later in the prenatal period.

Exposure to Toxins During Weeks 3 to 5 During a Pregnancy