Which of the following statements concerning teratogens is true? A. Teratogens include only substances that a mother's body produce. B. Hormones are heathful teratogens in any quantity C. Exposure to particular teratogens is most harmful during critical periods that corresponds to organs development D. Teratogens are only those substances that a mother ingest. I think c
You are correct. Option C is true. Exposure to particular teratogens is most harmful during critical periods that correspond to organ development.
You are correct, option C is the correct statement. Exposure to particular teratogens is most harmful during critical periods that correspond to organ development.
To understand and determine the correct option, it is essential to know what teratogens are. Teratogens are substances that can cause abnormal development or birth defects in an embryo or fetus when the mother is exposed to them during pregnancy. They can include a variety of factors like chemicals, medications, infectious agents, and even certain environmental conditions.
Option A states that teratogens include only substances that a mother's body produces. This statement is incorrect because teratogens can be external substances that the mother is exposed to, not just those produced within her body.
Option B suggests that hormones are healthy teratogens in any quantity. This statement is incorrect because although hormones play a crucial role in fetal development, excessive or imbalanced hormone levels can potentially be harmful to the fetus.
Option C is the correct statement. Exposure to particular teratogens is most harmful during critical periods that correspond to organ development. This means that certain teratogens may have a more significant impact on specific organs or systems when the fetus is undergoing crucial stages of development. Different organs have different critical periods, and exposure to teratogens during these sensitive times can lead to more severe abnormalities.
Option D states that teratogens are only substances that a mother ingests. This statement is incorrect because teratogens can enter the mother's body through different routes, including ingestion, inhalation, or skin contact.
In conclusion, option C correctly describes the nature of teratogens, stating that exposure to particular teratogens is most harmful during critical periods that correspond to organ development.