Page 71 - untitled

AAAC30 21/5/05 10:44 AM Page 70
30 Nerves of the upper limb I

Fig. 30.1 Trunks Dorsal scapular nerve
The brachial plexus. (Rhomboids, levator scapulae)
Lateral cord, red;
medial cord, yellow; Suprascapular nerve
posterior cord, green (supraspinatus, infraspinatus)
Upper

Middle Long thoracic nerve
(serratus anterior)

Lateral pectoral nerve
(pectoralis major Subscapular nerves
pectoralis minor) Lower (subscapularis, teres major)
Medial pectoral nerve
Musculocutaneous nerve
(pectoralis major, pectoralis minor)
Median nerve Thoracodorsal nerve
(latissimus dorsi)
Radial nerve
Axillary nerve Medial cutaneous nerve of arm
Medial cutaneous nerve of forearm
Ulnar nerve
Fig.30.2
The course and main
branches of the Radial nerve
Lateral and medial roots
radial nerve Profunda brachii artery
Brachial artery
Branches to triceps
Median nerve
Posterior cutaneous nerve
of forearm (supplies the
Pierces lateral posterior skin of forearm)
intermuscular Branches to brachialis and Pronator teres
septum
brachioradialis plus extensor Ulnar artery
carpi radialis longus Deep head of pronator teres
Posterior interosseous nerve Anterior interosseous branch
pierces supinator and supplies it. to flexor pollicis longus,
Superficial Also supplies: 1
radial nerve Extensor carpi radialis longus and brevis /2 flexor digitorum profundus
(supplies Extensors digitorum, digiti minimi, and pronator quadratus
dorsum of hand carpi ulnaris Branches to flexor carpi radialis
and lateral Abductor pollicis longus flexor digitorum superficialis,
1
3 /2 digits) palmaris longus
Extensor pollicis brevis and longus
Extensor indicis
Flexor retinaculum
Palmar cutaneous branch
Recurrent branch to;
abductor pollicis brevis, To lateral two (1st and 2nd)
flexor pollicis brevis, lumbricals
opponens pollicis
Cutaneous branches to the
1
palmar skin of lateral 3 /2 digits
Fig.30.3
The course and main
branches of the median nerve

70 Upper limb