Is the Thumb a Finger?
Our fingers are able to wrap tightly around objects. This is thanks to muscles that pull on tendons, causing the fingers to curl over tightly. The fingers and our palms also have tiny ridges on the skin and this helps to give us as much grip as possible.
For even more grip, however, we have also evolved opposable thumbs. This means that the thumbs can be curled inward to meet the fingers and the palm of the hand. This has helped to give us an evolutionary advantage that helped us to survive and evolve into the species we are today. Similarities between the fingers and thumbs often lead people to answer the question of whether or not the thumb is a finger.
