Yuteral bloody structures

Umbilical vein (intra-abdominal part)

Arises from the placenta and enters the ductus venosus. Brings oxygenated and nutrient-rich blood from the placenta to the fetus. becomes the Ligamentum Teres.

Ductus Venosus

Connects the umbilical vein directly to the inferior vena cava (IVC). Shunts exactly 50% of oxygenated and nutrient-rich blood to bypass the liver. becomes the Ligamentum venosum.

Foramen Ovale

between interatrial space. provides a bypass from right ventricle for oxygenated blood from right atrium (via ductus venosum) becomes fossa ovalis

Ductus arteriosus

connects the pulmonary trunk to the descending aorta. Allows for deoxygenated blood to bypass lungs and move to aorta where it will be pumped out to umbilical arteries to be recycled. Becomes ligamentum arteriosum

Umbilical Arteries and abdominal ligaments

Arise from the fetal internal iliac arteries and enter the umbilical cord. Brings deoxygenated, nutrient-poor blood back to the placenta. become the Medial umbilical ligaments and the superior vesicular artery (which supplies the bladder).