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- Some human body parts have become useless over the past few million years.
- These include wisdom teeth, the tail bone, and the muscle fibers that produce goose bumps.
- Take a look at nine body parts that remained in the human body despite having no function for millions of years.
Some human body parts serve no purpose despite once having a specific function among our ancestors.
For example, some of them can be removed, without lowering people's quality of life.
Insider spoke with Dorsa Amir in 2019, who was a developmental psychologist at Boston College at the time, to learn more about what she calls "evolutionary leftovers."