During fetal circulation the pressure is greatest in the
A) left atrium.
B) right atrium.
C) hepatic system.
D) pulmonary veins.

Question

Quizplus · Accepted Answer

Pressure in the fetal circulation is greatest in the right atrium, which allows right-to-left shunting that aids in bypassing the lungs during intrauterine life. The pressure increases in the left atrium after birth and will close the foramen ovale. The liver does not filter the blood during fetal life until the end. It is functioning by birth. Blood bypasses the pulmonary vein during fetal life.

During Fetal Circulation the Pressure Is Greatest in the