MEDICAL
THORACIC WALL
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Humerus
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Radius
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Ulna
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Carpals
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Detailed explanation-1: -The ulna is one of two bones that make up the forearm, the other being the radius. It forms the elbow joint with the humerus and also articulates with the radius both proximally and distally. It is located in the medial forearm when the arm is in the anatomical position. It is the larger of the two forearm bones.
Detailed explanation-2: -The proximal end of the radius bears the head, neck and radial tuberosity. The disc-shaped head of the radius bears a concave superior surface which articulates with the capitulum of the humerus and forms part of the compound elbow joint.
Detailed explanation-3: -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.