What are the three main bone of arms?

The three main bones of the arm are:

* The humerus. This is the longest and largest bone of the upper arm, and it runs from the shoulder to the elbow.

* The ulna. This bone is located on the inside of the forearm, and it runs from the elbow to the wrist.

* The radius. This bone is located on the outside of the forearm, and it runs from the elbow to the wrist.