When discussing fetal circulation, it is not that simple because the mother is performing the actions that the child will be doing after birth. During fetal circulation, there are three small holes, or shunts, that direct deoxygenated blood so the blood can be transferred into oxygenated blood. The shunts may also be used to override organs, like the liver and the lungs, because none of the organs in the fetus are fully developed while in the womb. The small holes that pass the right and left atrium go through the foramen ovale, which allows the oxygenated blood to go from the right atrium to left atrium. Then the blood travels to the left ventricle and out the aorta to the brain. The blood that is returning from the fetus’s body will also
