What is the name of the lateral bone of the forearm?

The lateral bone of the forearm is known as the radius. In the context of anatomy, the forearm consists of two main bones: the radius and the ulna. The radius is located on the same side as the thumb when the palms face upwards, making it the lateral bone in this position. This lateral orientation is anatomically significant, especially in understanding movements and injuries related to the forearm.

Knowing the distinction between the radius and the ulna is crucial for recognizing how these bones function together. The ulna, on the other hand, is positioned medially, running parallel to the radius and is generally larger at the proximal end near the elbow. While the humerus is in the upper arm and the scapula is part of the shoulder, they do not pertain to the lateral structure of the forearm. Therefore, the radius being identified as the lateral bone emphasizes its functional role in activities involving the forearm, such as rotation and gripping.