脑回

脑回(Gyrus, 复数为gyri),为大脑皮质中呈现隆起的部位。与呈现裂缝状的脑沟相对。出现脑回和脑沟的原因是,演化过程中折叠结构使颅内相同容量下人类可以有更多大脑皮质。较低等的动物则脑沟脑回较少。

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