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
Adjective phrase that have their head adjective on the right side of the phrase: The labels on the nodes in the trees are acronyms: A = adjective, Adv = adverb, AP = adjective phrase, N = noun/pronoun, P = preposition, PP = prepositional phrase. The constituency trees identify these phrases as adjective phrases by labeling the top node with AP, and the dependency trees accomplish the same thing by positioning the A node at the top of the tree. The following trees illustrate the structure of head-initial adjective phrases, i.e. adjective phrases that have their head on the left side of the