The common name for the humerus is the upper arm bone. This bone is located between the shoulder and the elbow. It is the longest bone in the upper limb and plays a crucial role in the movement and flexibility of the arm. The humerus connects to the scapula (shoulder blade) at the shoulder joint and to the radius and ulna (forearm bones) at the elbow joint. Its structure allows for a wide range of motion, making it essential for everyday activities such as lifting, throwing, and reaching.