The "ulnar side" refers to the side of the forearm and hand that is closest to the ulna bone. This side is opposite to the radial side, which is closer to the thumb. The ulnar side includes the little finger and is important for various hand movements and grip strength. In anatomy, the ulnar side plays a significant role in the function of the wrist and hand. It is involved in actions such as grasping and holding objects. Understanding the ulnar side is essential for diagnosing injuries or conditions affecting the hand and forearm.