What is the inner and larger bone of the forearm located on the side of the little finger?

The ulna is the inner and larger bone of the forearm, positioned on the side of the little finger. In the anatomical orientation of the arm, the ulna runs parallel to the radius, which is the smaller bone located on the opposite side, near the thumb. The ulna plays a crucial role in forming the elbow joint with the humerus and also contributes to the stability of wrist movements. Its anatomical location allows it to serve as an anchor point for various muscles and ligaments that facilitate the movement of the forearm and hand. The radius, while also a significant bone in the forearm, does not correspond to the side of the little finger and is instead located on the thumb side. Similarly, the scaphoid is a carpal bone in the wrist, while the humerus is the bone of the upper arm, making them unrelated to the question about the forearm bones.