Medulla
01
연수, 뇌간
lower or hindmost part of the brain; continuous with spinal cord; (`bulb' is an old term for medulla oblongata)
02
수질, 내부
the inner part of an organ or structure in plant or animal
03
수질, 수초 물질
a white fatty substance that forms a medullary sheath around the axis cylinder of some nerve fibers
