天气预报 > 其他 > 人老了为什么会死
人老了为什么会死
更新时间: 2020-07-01 00:00:00  

人老了会死亡的原因主要是身体机能衰退。人的身体由大约60万亿个细胞构成,通过复制旧细胞制造新细胞,并进行新旧细胞的更换,身体不断地成长。对此加以控制的是存在于各个细胞内的遗传基因,人年老后,制造新细胞的能力会逐渐减弱,旧细胞则会增加,人体发生老化,老化加剧,皱纹增加,牙齿脱落,变得容易得病,身体的功能停滞,不久就会死亡。

关键词: 为什么

人老了为什么会死相关经验

天气预报

最新推荐

页面:/news/view-2938162/ | 耗时:0.8901 s | 内存:2.11 MB | 查询:4 | 缓存读取:3 写入:0 | 加载文件:25
select * from tbl_Articles WHERE ArticleID=2938162 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=2938162 LIMIT 0,1
select * from tbl_Articles_sphinx where id=2938162 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(2227656,1084673,230946,1133121,1118204,1097351,1123305,1117560,904589,1123495,1055690,3407844,1058033,1091731,1084459,1589879,1082357,3279203,936188,1471188,1548794,1081861,1098569,1092024,1673703,1111638,3215191,147018,1080699,1079355) ORDER BY field (ArticleID,2227656,1084673,230946,1133121,1118204,1097351,1123305,1117560,904589,1123495,1055690,3407844,1058033,1091731,1084459,1589879,1082357,3279203,936188,1471188,1548794,1081861,1098569,1092024,1673703,1111638,3215191,147018,1080699,1079355)