The main bones of the lower arm are the ulna and the radius.

Name: The main bones of the lower arm are the ulna and the radius.
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Quizplus · Accepted Answer

This statement is true. The ulna and the radius are the two main bones of the lower arm. The ulna runs parallel to the radius and is located on the same side as the pinky finger, while the radius is located on the same side as the thumb. Together, these bones help to form the structure of the forearm and enable movement of the wrist and hand.

The Main Bones of the Lower Arm Are the Ulna