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为什么人在早上gao晚上矮?

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为什么人在早上高,晚上矮?

shen高是表示人ti主位时的总高度,它由tou颅、脊柱、骨盆和下肢这四bu分组成,而这些bu分又通过关节和韧带相连接。与人ti一天中shen高变化关系最为密切的要数脊柱。因为它是人ti的中轴,由24个椎骨、一个骶骨、一个尾骨,依靠韧带、椎间盘及椎间关节连接而成。其中椎间盘是位于两椎之间的盘状ruan骨,jian固而富有弹xing,除连接椎ti外,还可以承受压力,减缓冲击以保护脑髓,并有利于脊柱进行各zhong方向的运动。白天的工作和学习,使得全shen各肌rou、关节和韧带都chu1于jin张和压缩的状态,脊椎骨jinjin靠在一起。但经过整夜的睡眠休息,ju有弹xing的椎间盘没有了压力而得到放松,这样,脊柱就会因为放松而变得稍稍长一些,人的shen高也就chu现“早高晚矮”的有趣现象。

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