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Anatomy Atlases: Atlas of Human Anatomy in Cross Section: Section 4. Upper Limb

Atlas of Human Anatomy in Cross Section: Section 4. Upper Limb

Plate 4.11

Ronald A. Bergman, Ph.D., Adel K. Afifi, M.D., Jean J. Jew, M.D., and Paul C. Reimann, B.S.
Peer Review Status: Externally Peer Reviewed

Plate 4.11

Upper Left Quadrant

Lower Left Quadrant

Lower Right Quadrant

Upper Right Quadrant

1. Cephalic v. and accessory median cubital v.
2. Lateral antebrachial cutaneous nerve
3. Tendon m. biceps brachii
4. Brachioradialis m.
5. Radial nerve, superficial branch
6. Radial recurrent a. and v.
7. Radial nerve, deep branch
8. Extensor carpi radialis longus and brevis mm.

9. Brachialis m.
10. Extensor digitorum communis m.
11. Radial annular ligament
12. Radius, head
13. Anconeus m.

14. Ulna, radial notch
15. Coronoid process
16. Flexor digitorum profundus m.
17. Superficial fascia
18. Ulnar nerve
19. Flexor digitorum superficialis m.

20. Basilic v.
21. Brachial fascia and pronator teres m.
22. Median nerve
23. Ulnar a., brachial bifurcation
24. Radial a., brachial bifurcation

This section is the first in the series of the forearm. It passes through the capitulum of the radius (12) and the ulna and its coronoid process (15) and radial notch (14). Note the position of brachialis (9) inserting on the ulna.

The brachial artery has divided into its two terminal branches, the radial (24) and ulnar (23) arteries.

Note the band like tendon of biceps brachii (3) immediately above (anterior to) the brachialis muscle (9).

The cephalic vein (1) is joined by an accessory median cubital vein. Note the close relationship between the lateral antebrachial cutaneous nerve (2) and the cephalic vein (1) at this level.

The median nerve (22) and the biceps tendon (3) are separated by midline vascular elements (23, 24), and these two structures are enclosed between the pronator teres (21) and brachioradialis (4) muscles and the extensor carpi radialis longus and brevis muscles (8).

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