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人的脑(脊)膜有三层,即硬膜、软膜和蛛网膜。蛛网膜是一层薄而透明的膜,它包绕在软膜之外。在软膜与蛛网膜之间有个空腔,叫做蛛网膜下腔。当脑血管破裂出血至蛛网膜下腔时,称为蛛网膜下腔出血。蛛网膜下腔出血的发病年龄可自婴儿期至老年,但以青年和壮年为多。尤其是近年来,随着生活节奏的加快,社会竞争的加剧,许多专心于事业的中年人,不幸因蛛网膜下腔出血而早逝,令人扼腕叹惜。
Human brain (spinal) membrane has three layers, namely dura mater, soft membrane and arachnoid. The arachnoid is a thin, transparent film that wraps around the soft film. Between the soft membrane and the arachnoid cavity, called the subarachnoid space. When cerebral hemorrhage ruptures to the subarachnoid space, it is called subarachnoid hemorrhage. The onset of subarachnoid hemorrhage can be from infancy to old age, but mostly young and middle-aged. Especially in recent years, with the accelerated pace of life, social competition intensified, many middle-aged people dedicated to their cause, unluckily died of subarachnoid hemorrhage, it is lamentable pity.