An adult heart should have a:
A)ductus arteriosus.
B)ductus venosus.
C)ligamentum arteriosum.
D)foramen ovale.

Question

Quizplus · Accepted Answer

A ductus arteriosus is a blood vessel present in the fetus that connects the pulmonary artery to the aorta, allowing blood to bypass the lungs. It should close shortly after birth. A ductus venosus is a blood vessel that allows oxygenated blood from the placenta to bypass the liver and enter the inferior vena cava, but it should also close shortly after birth. The foramen ovale is an opening between the left and right atria in the fetal heart that allows blood to bypass the lungs, but it should close shortly after birth. The only structure that should be present in an adult heart from this list is the ligamentum arteriosum, which is a remnant of the ductus arteriosus and connects the pulmonary artery to the aortic arch.

An Adult Heart Should Have A