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Mar 7
1. Oxygenated blood from the placenta enters the fetus through the umbilical vein, which carries the blood to the liver.
2. From the liver, the blood flows through the ductus venosus, which bypasses the liver and directs the blood to the inferior vena cava.
3. The blood then enters the right atrium of the heart, where it is pumped into the right ventricle and then into the pulmonary artery.
4. However, the majority of the blood in the pulmonary artery is shunted through the ductus arteriosus into the aorta, bypassing the lungs.
5. The oxygenated blood is then distributed to the rest of the body, providing nutrients and oxygen to the developing fetus.
6. Deoxygenated blood returns to the placenta through the umbilical arteries, completing the fetal circulation loop.
2. From the liver, the blood flows through the ductus venosus, which bypasses the liver and directs the blood to the inferior vena cava.
3. The blood then enters the right atrium of the heart, where it is pumped into the right ventricle and then into the pulmonary artery.
4. However, the majority of the blood in the pulmonary artery is shunted through the ductus arteriosus into the aorta, bypassing the lungs.
5. The oxygenated blood is then distributed to the rest of the body, providing nutrients and oxygen to the developing fetus.
6. Deoxygenated blood returns to the placenta through the umbilical arteries, completing the fetal circulation loop.
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