Neuroanatomy Draw It To Know It

3. Peripheral Nervous System—Upper Extremity 49

DRAWING 3-10 Radial Nerve — Complete

Ventral rami &

brachial plexus

Upper arm Forearm Hand

Triceps

(C6-C8)

Elbow group

(C5-C8)

Brachioradialis (C5, C6)

Brachialis (partial) (C5-C7)

Extensor carpi radialis

(longus & brevis) (C6, C7)

Anconeus (C6 - C8)

Supinator

(C6, C7)

Extensor carpi ulnaris

Abductor pollicis longus

(C7, C8) Extensor indicis proprius

Extensor digitorum communis

Extensor digiti minimi

Extensor pollicis longus

Extensor pollicis brevis

Posterior cord

Axillary

nerve

Triceps

Posterior cutaneous nerves to arm

and forearm & lower lateral

cutaneous nerve of arm

Elbow

group

Supinator

Posterior interosseous nerve

Superficial radial

nerve (cutaneous)

C5 - C8

Deltoid &

teres minor m.

Upper, middle, Spiral groove Elbow

& lower trunks

Axilla

Finger & thumb extensors

(C7, C8)

Finger & thumb extensors

Extensor carpi ulnaris &

abductor pollicis longus