Humerus Labeling Quiz

1. A narrow groove encircles the articular head and separates it from the tubercles. What should this feature be labeled?

2. Which distal structure has a spool-like shape and articulates with the trochlear notch of the ulna?

3. When the elbow flexes, the coronoid process of the ulna enters a depression on the anterior humerus. What is that depression called?

4. A label points to the smooth, rounded proximal surface that articulates with the glenoid cavity of the scapula. Which structure is it?

5. During examination of the posterior shaft, a shallow oblique channel is identified where the radial nerve travels closely along the bone. Which landmark is this?

6. Following the outer border of the distal humerus proximally from the lateral epicondyle, which raised feature would you trace?

7. A fracture line lies just distal to the greater and lesser tubercles, at the transition from the proximal end to the shaft. Which region is involved?

8. On the lateral surface near the middle of the shaft, a roughened raised area provides attachment for the deltoid muscle. What is it called?

9. At the distal end, a label points to the rounded lateral articular surface that meets the head of the radius. Which structure is labeled?

10. A small depression is located on the anterior distal humerus directly superior to the capitulum. Which label belongs there?

11. While orienting a right humerus, you find the large prominence lateral to the head at the proximal end. Which landmark have you found?

12. A probe is placed in the channel between the greater and lesser tubercles. What is the anatomical name of this channel?

13. A label marks the smaller proximal projection located mainly on the anterior surface of the humerus. Which structure is indicated?

14. A deep depression on the posterior distal humerus accommodates part of the ulna during elbow extension. Which structure is it?

15. At the distal humerus, you identify the larger of the two palpable side projections. It lies on the medial side and protects a nearby passage for the ulnar nerve. What is it?

16. A label indicates the smaller non-articular projection on the lateral side of the distal humerus, just above and beside the capitulum. Which landmark is this?