What are the two bones found in the lower arm?

The two bones found in the lower arm are the ulna and radius. These bones run parallel to each other; the ulna is located on the side of the arm opposite the thumb, while the radius is on the same side as the thumb. Together, they enable a wide range of movement and flexibility in the wrist and elbow joints, allowing for actions such as rotation and grasping.

The ulna primarily serves as a stabilizing bone, while the radius allows for rotation of the wrist. This anatomical arrangement is crucial for daily activities, such as turning a doorknob or using tools, highlighting their importance in the functionality of the arm.