Asked by Phuong Nguyen on May 24, 2024

verifed

Verified

The fetal pulmonary trunk is attached to the fetal aorta via the ________.

A) brachiocephalic artery
B) left subclavian artery
C) ductus arteriosus
D) ligamentum arteriosum

Ductus Arteriosus

A fetal blood vessel that connects the pulmonary artery to the descending aorta, allowing most blood to bypass the fetus's developing lungs.

Fetal Pulmonary Trunk

A major vessel in the developing fetus that carries blood from the heart to the lungs for oxygenation.

Fetal Aorta

The main artery in the fetus that carries blood from the heart to various parts of the body.

  • Understand the adaptive circulation mechanisms in the fetus.
verifed

Verified Answer

GK
George KamelMay 29, 2024
Final Answer :
C
Explanation :
The ductus arteriosus is a fetal blood vessel that connects the pulmonary trunk to the aorta, allowing most of the blood to bypass the lungs since they are not yet functional in the fetus. Once the baby is born, the ductus arteriosus usually closes within a few days, becoming a ligament known as the ligamentum arteriosum.