Which of the Following Statements Best Describes Changes in the Newborn

question 6

Multiple Choice

Which of the following statements best describes changes in the newborn circulation system at birth?

• A) Few substantive changes take place at birth. The circulation system is nearly complete in the 8th month of the mother's pregnancy.
• B) Various fetal veins and arteries close spontaneously and eventually undergo fibrosis, thus closing off fetal shunts between arterial and venous circuits.
• C) The major fetal shunts remain open for few days after birth until the newborn's lungs are fully functioning.
• D) The umbilical vein and umbilical artery continue to function for some days after birth and then eventually become thrombosed.
• E) None of the above is true.