Neuroanatomy Draw It To Know It

3. Peripheral Nervous System—Upper Extremity 35

DRAWING 3-3 Brachial Plexus — Complete

Radial nerve

Ulnar nerve

C5

C6

C7

C8

T1

C4

T2

(serratus anteiror m.)Long thoracic nerve

Upper trunk

Middle trunk

Lower trunk

Lateral cord

Posterior cord

Medial cord

Musculocutaneous nerve

(biceps brach., brachialis,

coracobrachialis m.)

Median nerve

Anterior division

upper trunk

Posterior division

middle trunk

Posterior division

lower trunk

Anterior division

lower trunk

Dorsal scapular nerve

(rhomboid m.)

Suprascapular nerve

(supraspinatus and infraspinatus m.)

Lateral pectoral nerve

(clavicular pec. major

& pec. minor m.)

Medial pectoral n. (sternal

pec. major & pec. minor m.)

Medial brachial cutaneous nerve

Medial antebrachial cutaneous nerve

Axillary nerve

(deltoid &

teres minor m.)

Posterior division

upper trunk

Anterior division

middle trunk

Upper subscapular n.

(subscap. m.) Thoracodorsal n.

(lat. dorsi m.)

Lower subscap. n.

(subscap. & teres

major m.)

N. to subclavius m.

(prefixed)

(postfixed)