hindmost segment of the brain, 1650s, from Latin medulla, literally "marrow," also "pith of plants," of unknown origin, perhaps related to or influenced by medius "middle" (but compare also Old Irish smiur, Welsh mer "marrow"). The word was used in the Latin senses in Middle English. Related: Medular; medullary.
权威例句
1. The descending vasa recta run in bundles into the medulla.
直血管降支呈束状进入髓质.
2. Blood from the medulla enters short, stout, thin - walled veins.
髓质血流汇入粗而短的薄壁静脉.
3. The parasympathetic innervation of the heart originates in the medulla oblongata.
支配心脏的副交感神经发源于延髓的迷走神经核.
4. The adrenals usually appear normals, but occasional hemorrhages may occur in the cortex and medulla.
肾上腺一般正常, 但皮质部和髓质部中间偶而也出现血.
5. The adrenals usually appear normal, but occasional hemorrhages may occur in the cortex and medulla.