THORAX ABDOMEN AND PELVIS

Detailed explanation-1: -In the anatomical position, the radius is laterally placed in the forearm while the ulna lies medially. On the anterior view, the proximal ends of the radius and ulna are shown articulating with the distal humerus.

Detailed explanation-2: -Based on standard anatomical position (feet flat, palmar surface anterior), the ulna is medial compared to the radius. The radius is the lateral bone based on standard anatomical position. The ulna is closer to the midline which is why it is medial.

Detailed explanation-3: -The ulna is one of two bones in your forearm. The other is your radius. The ulna is on the medial (pinkie) side of your forearm.

Detailed explanation-4: -The radius articulates proximally at the elbow with the capitulum of the humerus and the radial notch of the ulna. It articulates at its distal end with the ulna at the ulnar notch and with the articular surfaces of the scaphoid and lunate carpal bones.