Hepatic veins ultimately from numerous central veins of the liver lobules. None of the hepatic veins have valves. The hepatic veins are divided into an upper and a lower group. The upper three drain the central veins from the right, middle, and left regions of the liver and are larger than the lower group of veins. The lower group of from six to twenty smaller hepatic veins come from the right lobe and the caudate lobe, are in contact with the hepatic tissue, and are valveless. All the veins empty into the inferior vena cava at the back of the liver. Budd–Chiari
Nominalized adjective "headwind" is then assumed. The third type is known as the "permanent" adjectival noun and has an adjective that stands alone as a noun. Such adjectives have become nouns over time, and most speakers are aware of their implicit adjectival meaning. Nominalized adjectives occur frequently in both Classical Arabic and Modern Standard Arabic. An example would be "things (that are) Islamic", which is derived from the adjective "Islamic" in the inanimate plural inflection. Another example would be "the big one" (said of a person or thing of masculine gender), from "big" inflected in the masculine singular. Nominalized adjective A nominalized