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Twitter thread maps out the human body's evolutionary leftovers | Dorsa Amir @DorsaAmir 1d Replying DorsaAmir Put hand flat on surface and touch pinky thumb. Do see raised band wrist there's vestigial muscle called palmaris longus used help move around trees. About 14 us don't even have this muscle anymore 2/8) present absent | Oh, and know sometimes get goosebumps cold or scared s vestigial reflex used raise body hair make appear bigger or trap an extra layer heat warmth. Some people can

Twitter Thread: The Human Body's Evolutionary Leftovers

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Primate Brains!

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