Medulla
01
延髓, 脑干
lower or hindmost part of the brain; continuous with spinal cord; (`bulb' is an old term for medulla oblongata)
02
髓质, 内部
the inner part of an organ or structure in plant or animal
03
髓质, 髓鞘物质
a white fatty substance that forms a medullary sheath around the axis cylinder of some nerve fibers
