Expected headings
"Pathway for oxygenated blood"
"Role of ductus venosus"
"Pathway for deoxygenated blood"
"These shunts close after birth, and most of the fetal vessels are visible as remnants in the adult circulation. The function of these shunts is to direct oxygen-rich venous blood to the systemic circulation and to ensure oxygen-deplete venous blood bypasses the underdeveloped pulmonary circulation. There are three shunts in the fetal circulation:"