Hepatic refers to the liver. Therefore, many structures associated with the liver have "hepatic" as a prefix to their name. The liver is composed of several types of cells, including hepatocytes and Kupffer_cells. Kupffer cells are the macrophages of the liver.
The liver is organized into hexagonal sections called lobules. The outer edge of each lobule is surrounded by CT, which is stained a blue color on most of our slides. Each lobule contains a central_vein, and the edges of each lobule contain triads. Each triad has at least one (or possibly more) of these: a branch of the hepatic_artery, a branch of the hepatic_portal_vein, and a bile_duct. Triads also contain lymphatic vessels and nerves. There are often multiples of these structures visibly associated with a "triad".