Ulnas are a type of bone located in the forearm, also referred to as the cubitus. Synonyms for ulnas include forearms, radius, elbow joint, upper arm bone, and humerus. These bones act as a crucial support system for the wrist and hands, enabling movement and strength. The ulna is one of the two bones in the forearm, extending from the elbow to the wrist along with the radius. Understanding the different names and synonyms for ulnas is essential for effective communication in medical and anatomical contexts. Knowing the anatomy of the ulnas can help in diagnosing and treating arm injuries or medical conditions.