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既然一个就够用 为啥我们要长两个肾？ - IT 与健康 - cnBeta.COM

 5 years ago
source link: https://www.cnbeta.com/articles/tech/834985.htm
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在地球上生活的大多数生物，很多器官都是对称生长的，比如我们有两只眼睛、两只耳朵，两个鼻孔，这就是所谓的“双边对称”现象。同样，我们的身体内部也有两个肾脏。通过“净化”血液，肾脏可以帮助清除我们体内所有不需要的东西，并通过膀胱排出体外。

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