One-half of the blood from the mother passes through the fetus's liver and one-half of the blood enters the newborn's central circulation via a shunt known as the ____.

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The ductus venosus is a shunt that connects the umbilical vein to the inferior vena cava, allowing for a portion of oxygenated blood from the placenta to bypass the liver and enter the newborn's systemic circulation. The ligamentum arteriosum is a remnant of the ductus arteriosus, which is a fetal shunt that connects the pulmonary artery to the aorta. The umbilicus is the site of attachment for the umbilical cord, which connects the fetus to the placenta. The portal vein carries blood from the digestive organs to the liver.

One-Half of the Blood from the Mother Passes Through the Fetus's