When extending the thumb as far as possible, a small divot on the back of the hand is made by the raised thumb tendon near the wrist. This concavity is called the anatomical snuffbox, as historically it was used to hold ground tobacco (snuff) for inhaling.

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7 Vestigial Features of the Human Body

Vestiges are remnants of evolutionary history—“footprints” or “tracks,” as translated from the Latin vestigial. All species possess vestigial features, which range in type from anatomical to physiological to behavioral. More than 100 vestigial anomalies occur in humans. The following list explores