Umbilical cord carries oxygenated, nutrient-rich blood to the fetus, and two arteries that carry deoxygenated, nutrient-depleted blood away. Occasionally, only two vessels (one vein and one artery) are present in the umbilical cord. This is sometimes related to fetal abnormalities, but it may also occur without accompanying problems. It is unusual for a vein to carry oxygenated blood and for arteries to carry deoxygenated blood (the only other examples being the pulmonary veins and arteries, connecting the lungs to the heart). However, this naming convention reflects the fact that the umbilical vein carries blood towards the fetus's heart, while the umbilical arteries
Deep vein of the thigh thrombus, or blood clot, forming which can dislodge and travel into the heart where it can travel to the lungs. This is a possible complication of immobility due to excessive bed rest following a surgery or disability, or an excessively sedentary lifestyle. Deep vein of the thigh The deep vein of the thigh, (profunda femoris vein or deep femoral vein) is a large deep vein in the thigh. It receives blood from the inner thigh and proceeds superiorly and medially running alongside the profunda femoris artery to join with the femoral vein approximately at the level of the inferior-most portion