Write for me a simplified fetal circulation

Here's a simplified breakdown:

1. Oxygenated blood from the placenta enters the fetus through the umbilical vein.
2. Most of this blood goes directly to the inferior vena cava via a vessel called the ductus venosus.
3. The inferior vena cava, carrying oxygenated blood from the placenta and deoxygenated blood from the lower body, empties into the right atrium.
4. A significant portion of this blood is shunted from the right atrium directly into the left atrium through the foramen ovale.
5. From the left atrium, blood goes to the left ventricle and then to the aorta, supplying the upper body and brain.
6. The remaining blood in the right atrium (mixed oxygenated and deoxygenated) goes into the right ventricle.
7. This blood is pumped into the pulmonary artery. However, instead of going to the lungs (which are not yet functional), most of it is shunted into the aorta via the ductus arteriosus.
8. Deoxygenated blood from the lower body returns to the placenta via the umbilical arteries.