The Cardiovascular System of a Newborn Must Be Adjusted After

The cardiovascular system of a newborn must be adjusted after the infant takes its first breath. Which of the following is also true?

A) The ductus venosus is disconnected at the severing of the umbilical cord and all visceral blood goes into the vena cava.
B) The foramen ovale between the atria of the fetal heart closes at the moment of birth.
C) The urinary system is activated at birth.
D) The ductus arteriosus constricts and is converted to the ligamentum arteriosum.

Correct Answer:

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