Brachial Plexus Block

From Nerve Roots-

Muscles, Cutaneous Roots, Long thoracic nerve, C5, C6, C7
Serratus anterior

Dorsal scapular nerve-
C4, C5
Rhomboid muscles and levator scapulae

Phrenic nerve-
C5
Diaphragm

Upper trunk-
Suprascapular nerve
C5, C6
Supraspinatus and infraspinatus

Nerve to subclavius
C5, C6
Subclavius

Posterior cord
Radial nerve
C5, C6, C7, C8, T1
Triceps, supinator, brachioradialis, extensor muscles of the forearm
Posterior cutaneous nerve of the arm

Axillary nerve
C5, C6
Anterior branch: deltoid
Posterior branch: teres minor, deltoid
Upper lateral cutaneous nerve of the arm

Thoracodorsal nerve
C6, C7, C8
Lattisimus dorsi

Upper subscapular nerve
C5, C6
Subscapularis

Lower subscapular nerve
C5, C6
Subscapularis and teres major

Medial cord
Ulnar nerve
C8, T1
Flexor carpi ulnaris, flexor digitorum profundus, intrinsic hand muscles except thenar muscles and 2 lateral lumbricals
Medial side of hand, medial 1 ½ fingers on palmar side and medial 2 ½ fingers on the dorsal side

Medial root of median nerve
C8, T1
Fibres to the median nerve
Portion of hand not supplied by ulnar or radial nerve

Medial pectoral nerve
C8, T1
Pectoralis major, pectoralis minor

Medial cutaneous nerve of the arm
C8, T1

Medial side of arm

Medial cutaneous nerve of the forearm
C8, T1

Medial side of forearm
Lateral cord
Lateral pectoral nerve
C5, C6, C7
Pectoralis major, pectoralis minor

Musculocutaneous nerve
C5, C6, C7
Coracobrachialis, brachialis and biceps brachii
Lateral cutaneous nerve of the forearm

Lateral root of median nerve
C5, C6, c7
Fibers to the median nerve