Human vestigiality

The muscles connected to the ears of a human do not develop enough to have the same mobility allowed to monkeys. Arrows show the vestigial structure called Darwin's tubercle.

Ileum, caecum and colon of rabbit, showing Appendix vermiformis on fully functional caecum

The human vermiform appendix on the vestigial caecum

Left: Muscles of the human earRight: The non-vestigial auricular muscle in the donkey can help it to move its ears like antenna

In the context of human evolution, human vestigiality involves those traits (such as organs or behaviors) occurring in humans that have lost all or most of their original function through evolution. Although structures called vestigial often appear functionless, a vestigial structure may retain lesser functions or develop minor new ones. In some cases, structures once identified as vestigial simply had an unrecognized function.

单词	Vestigial remnant
释义	Vestigial remnant 原声例句双语版 TED-Ed 演讲精选 Or are they relics of our evolutionary past, having once served some important purpose only to persist into the present as vestigial remnants? 或者它是我们进化过程中的遗留物，曾经服务于一些重要的目的，但现在只是因为存在而存在，就像残留的遗迹一样？英语百科 Human vestigiality In the context of human evolution, human vestigiality involves those traits (such as organs or behaviors) occurring in humans that have lost all or most of their original function through evolution. Although structures called vestigial often appear functionless, a vestigial structure may retain lesser functions or develop minor new ones. In some cases, structures once identified as vestigial simply had an unrecognized function.
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Vestigial remnant

Human vestigiality