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