Final answer:
The bones of the upper and lower arm include the humerus in the upper arm and the ulna and radius in the forearm.
Step-by-step explanation:
The three bones that make up the upper and lower arm are the humerus, ulna, and radius. The humerus is the single bone of the upper arm, located between the shoulder and elbow joints. In contrast, the forearm, which extends from the elbow to the wrist, comprises two bones: the ulna (positioned medially) and the radius (positioned laterally).