Concerning all the factors influencing fetal development, nurses should be aware that:
1. all congenital disorders are inherited.
2. teratogens are rogue genes.
3. environmental substances or exposures that result in disability have their greatest effect from days 15 to 60 of fetal growth.
4. malnutrition during pregnancy produces low-weight newborns but does not affect brain development.
3
1. Incorrect. Congenital means that the condition was present at birth; some congenital malformations are the result of environmental factors (teratogens).
2. Incorrect. Teratogens are environmental substances or exposures that result in functional or structural disability.
3. Correct. Teratogens have their greatest effect during periods of rapid differentiation.
4. Incorrect. Malnutrition during pregnancy can affect brain development, particularly dur-ing the latter half of gestation.
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