medulla
英[me'd?l?]
美[m?'d?l?]
- n. 髓質
- 的縮寫
英英釋意
- 1. a white fatty substance that forms a medullary sheath around the axis cylinder of some nerve fibers
- 2. lower or hindmost part of the brain; continuous with spinal cord; (`bulb' is an old term for medulla oblongata);
- "the medulla oblongata is the most vital part of the brain because it contains centers controlling breathing and heart functioning"
- 3. the inner part of an organ or structure in plant or animal