人工冬眠治疗颅脑损伤的理论依据有哪些？
参考答案：
（1）冬眠药物有镇静、镇痛、安眠及止吐作用，使机体对内外环境刺激反应性降低，有利于防止及控制躁动，肌肉强直及抽出等；
（2）冬眠有调节损伤所引起的大脑皮层与植物神经功能紊乱的作用；
（3）冬眠降低了脑的代谢和氧的需要量，从而提高神经细胞对缺氧的耐受力，可减少脑细胞的损害；
（4）损伤可使神经细胞膜的渗透性发生改变，冬眠可改善神经细胞的渗透性，使细胞内外钾钠离子重新平衡，因此可防止脑水肿及其发展，而降低颅内压。
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| When July comes, children know they'll have 1 exams and the school year will end soon. Boys and girls will have a nearly two months'holiday,and they'll leave school 2 train or by car to 3 to see their fathers and mothers. The summer holidays are the 4 time of the year for most children. The weather is usually good, so one can 5 most of his time playing outside. If one lives in the country, he can 6 into the woods (森林) and in the fields. If one lives in a big town, he can usually go to a park to play. The best place for a summer holiday is the 7 . Some children are 8 enough to live near the sea. But for the others who do not, if they have chance to stay at one of the big seaside towns for a week or two, they will talk about it all the following school year. Now, 9 makes children like the seaside so much? I think it's the sands (沙滩), the sea and the sun, not anything else. Of course, there are 10 new things to see, nice things to eat, and interesting things to do. But the feeling of sand under their feet, of salt water on their skin, and the feeling of the warm sun on their backs make them happier. | ||||
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