1. There is a central vein in the center of the medulla. ����������һ��ľ����������뾲����
2. This part of the vertebrate brain has two divisions, the medulla and the cerebellum. ���������ӵ���һ���ֿɷ�Ϊ�����֣������С�ԡ�
3. In this study, with the aggravation of renal function, the value of [cortex �C medulla IBS%] had a gradual decrease in chronic nephrosis. ��һ��˵�������������������������ܱ仯�еij̶Ƚ���Ƥ�ʵĸı��Ϊ���ԡ�
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n.
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
3. the inner part of an organ or structure in plant or animal