生物演化的路上,先是有一个口,吃喝和拉都在这。后来又多了一个口,把吃喝和拉分开。人类呢是属于后口动物,意思就是先出现的第一个口进化成肛门,后来出现的口进化成一般意义上的口。
意思就是某种意义上你的祖先就是用肛门进食的
https://www.zhihu.com/question/641135589
意思就是某种意义上你的祖先就是用肛门进食的
https://www.zhihu.com/question/641135589
Zhihu
人可以使用肛门进食吗? - 知乎
有口有肛门相对于口和肛门合一有什么优势?如果让一个人通过肛门摄取食物,过一段时间再拉出来,人能吸收…
喵喵的频道
美好世界 S3 动漫花园上居然没有……?
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