What does Recanalized umbilical vein mean?
A recanalized umbilical vein is a sonographic finding that is common in patients with cirrhosis or portal hypertension.
Which ligament is a remnant of the fetal umbilical vein?
The remnant of the umbilical vein forms a fibrous cord, the ligamentum teres that runs in the free edge of the falciform ligament.
Where does the umbilical vein lead to in a pig?
After completing the cuts, locate the umbilical vein that leads from the umbilical cord to the liver. You will need to cut this vein in order to open up the abdominal cavity. Your pig may be filled with water and preservative, drain over the sink if necessary and rinse organs.
What is a patent umbilical vein?
A patent umbilical vein is a sonographic sign of portal hypertension. The specificity of the sign is not known. In a review of 12 patients with sonographically demonstrated patency of the umbilical vein, we found two patients in whom no clinical evidence existed to suggest the presence of portal hypertension.
What happens to umbilical artery and vein after birth?
After birth, the proximal portions of the intra‐abdominal umbilical arteries become the internal iliac and superior vesical arteries, while the distal portions are obliterated and form the medial umbilical ligaments. The umbilical veins arise from a convergence of venules that drain the extra‐embryonic allantois.
What is the function of umbilical vein?
The umbilical vein carries oxygenated, nutrient-rich blood from the placenta to the fetus, and the umbilical arteries carry deoxygenated, nutrient-depleted blood from the fetus to the placenta (Figure 2.2).
How is the fetal umbilical vein connected to the portal vein?
Right-sided ligamentum teres (RSLT) hepatis is a rare anatomical variant in which the fetal umbilical vein is connected to the right paramedian trunk of the portal vein. Despite its rarity, it is crucial for surgeons and intervention specialists because of its frequent association with intrahepatic …
Is the right-sided ligamentum teres hepatis always accompanied?
TEACHING POINTS: • Right-sided ligamentum teres (RSLT) hepatis is a rare anatomical variant, which is frequently associated with intrahepatic vascular and biliary anomalies. Previous studies had discussed the vascular anomalies in livers with RSLT.
When does the umbilical vein become the ligamentum venosum?
It undergoes obliteration that begins in the second postnatal week and ends by the second or third month after birth, in which the ductus venosus becomes the ligamentum venosum. The function of ductus venosus is to shunt the blood from the umbilical vein into the inferior vena cava, thereby bypassing the liver.
What are the remnants of the fetal ductus venosus?
The ligamentum venosum is an extrahepatic fibrous remnant of the fetal ductus venosus and runs in a craniocaudal direction. It is only a few centimeters long and usually is not seen within the fissure of the ligamentum venosum on axial MDCT images.