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
Tapping the Vein (comics) Tapping the Vein (comics) Tapping the Vein is a comic series of Clive Barker's short stories from "The Books of Blood" published by Eclipse Comics between 1989 and 1992. Eclipse Books would continue to adapt various Clive Barker short stories in the early 1990s after the "Tapping the Vein" series came to an end. These include the following: (A single volume featuring just "Dread" was also published) (A single volume featuring just "Revelations" was also published) Advertised, but never published was an adaption of "The Age of Desire" by P. Craig Russell and Tim Bradstreet, from "The Books of Blood