Though the hand takes up relatively little space on our body, it is an important part of our everyday functions. So important, in fact, that nearly 25% of our brain's motor cortex is devoted to the muscles and movements of the hand. We use our hands to eat, to work, to play, and to live. The shape, function, and capability of our hands set us apart from almost all other animals. Below are some more facts and statistics about this vital part of our body.