A woman's cousin gave birth to an infant with a congenital heart anomaly.The woman asks the nurse when such anomalies occur during development.The nurse's response is based on which information?
A) It is unknown when such defects occur.
B) The timing depends on the cause of the defect.
C) They occur between the third and fifth weeks of fetal development.
D) They most often occur in the first 2 weeks of pregnancy.

Question

Quizplus · Accepted Answer

The cardiovascular system is the first organ system to function in the developing human.Blood vessel and blood formation begin in the third week,and the heart is developmentally complete in the fifth week."We don't really know when such defects occur" is an inaccurate statement.Regardless of the cause,the heart is vulnerable during its period of development,the third to fifth weeks."They usually occur in the first 2 weeks of development" is an inaccurate statement.

A Woman's Cousin Gave Birth to an Infant with a Congenital