Answer:
The best answer to the question: How does the localization of this referred pain correspond to the areas served by the ulnar nerve, would be: the pain felt in the elbow travels both down towards the little finger and up to the axillary zone through the ulnar nerve.
Step-by-step explanation:
The ulnar nerve is one of the longest, and least protected, of all the peripheral nerves in the Peripheral Nervous System. It branches from the brachial plexus, particularly the medial chord that arise from T1 and C8. The ulnar nerve goes down the arm and crosses literally between the middle epicondyle of the humerus and the skin, next to the ulnar collateral ligament of the elbow. This nerve serves the pinky finger and parts of the ring finger, both front and back and it is particularly noticeable whenever a person strikes what we call the funny bone, at the elbow joint. This means that during the strike, the nerve hits the bone and sends painful messages both towards the hand and also towards the brachial plexus in the axillary region, producing an electrical-kind of reaction.