Vestigial Structures – Plantaris Muscle

Vestigial Structures - Plantaris Muscle

This is an photo of the plantaris muscle (under the skin). The plantaris muscle is considered a vestigial structure. A vestigial structure is a structure that through evolution, has become useless. The plantaris muscle was once used for grabbing with the feet, which humans have no use of anymore. Other examples of vestigial structures include the appendix, the coccyx and the plica luminaris.

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by | August 28, 2012 · 7:00 pm

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