The nerves of the hand and wrist originate from your structure called the brachial plexus which is found proximally in the root of your neck and axillary area. The center finger, becoming the longest, presents balance and energy throughout gripping and lifting jobs, serving as an anchor for another fingers. From https://www.theorthopaedicandpainpractice.com/what-are-the-different-bones-found-in-my-hand/