- Ventral Rami 

- Supraclavicular

- C5, C6, C7

Innerv:

- Serratus Ant.

- Ventral Rami

- Supraclavicular

- (C4), C5

Innerv:

- Rhomboid major and minor

- Levator Scap

- Upper Trunk

- Supraclavicular

- (C4), C5, C6

Innerv:

- Supraspinatus and Infraspinatus

- Upper Trunk

- Supraclavicular

- (C4), C5, (C6)

Innerv: subclavius 

- Post Cord

- Infraclavicular

- C5, C6, C7

Innerv: 

- Subscapularis

- (LS) Teres Major

- Post Cord

- Infraclavicular

- C6, C7, C8

Innerv:

- Latissimus Dorsi

Medial Brachial Cutaneous Nerve

and

Medial Antebrachial Cutaneous Nerve

- Medial Cord

- Supraclavicular

- C8, T1

Innerv:

- (MBCN) Med. skin of arm and upper forearm

- (MABCN) Med. skin of the forearm

- (LPN) Lat. Cord and (MPN) Med. Cord

- Infraclavicular

- (LPN) C5, C6, C7 (MPN) C8, T1

Innerv:

- (LPN) Pec Major

- (MPN) Pec Maj and Min 

- Terminal N. off Post Cord

- Infraclavicular

- C5, C6

Innerv:

- Deltoid, Teres Minor

- Lat. Skin of upper arm by Lateral Brachial Cutaneous N.

- Terminal N. off the Post Cord - Infraclavicular - C5-C8

Innerv:

- Triceps, Anconeus, Brachioradialis, supinator

- Thumb ext. and Abd.

- extensors of the wrist and hand by deep radial n.

- C5-6 Post skin of arm and forearm by post ab n.

- C7 Skin on back hand by superficial radial n.

- C6 skin on Post thumb and ant snuff box

- Terminal N. off the Lateral Cord

- Infraclavicular

- C5, C6, C7

Innerv:

- Coricobrachialis, Biceps, Brachialis

- Lat. skin of the forearm by Lateral Antebrachial N.

- Term Nerve off Lat cord and Med cord - Infraclavicular

- (LR) C5, C6, C7 (MR) C8, T1

Innerv: 

- (LR) Muscles of volar forearm *Pro Teres* and hand.

- C6/C7 skin of hand 

- (MR) Muscles of hand 

- except FCU and FDP(ulnar part)

- Terminal Nerve off the Medial Cord

- Infraclavicular

- C8, T1

Innerv:

- Muscles of the forearm and hand

- Skin of hand

- Flexors of wrist and fingers (except: DIP of dm & ring)

- pronators of forearm

- thenar mm (flx/abd/opp) and lumb I & II (flx mcp and ext PIP & DIP dig.2&3)

- sensory C6 C7: palmar aspect of the thumb, index, middle and radial half of the ring fingers and dorsum of

the index, middle and ring distal to PIP

- 

- thenar mm (flx/abd/opp) and lumb I & II (flx mcp and ext PIP & DIP dig.2&3)

- sensory C6 C7: palmar aspect of the thumb, index, middle and radial half of the ring fingers and dorsum of

the index, middle and ring distal to PIP

- coracobrachialis, biceps, and brachialis

- glenohemeral flexion, elbow flexion, and forearm supination

- sensory: Lat forearm by Lat. AB Cut. N.

- flex of the wrist - ulnar dev

- flx of dig 5 & 4 - abd & opp of dig 5

- flx, abd and add of MCP Dig. 5, 4, 3, and 2

- ext of Dig. 5, 4, 3, and 2 - add of dig 1

- sensory: dorsal and palmar surfaces of the little and

ring fingers 

- flx of dig 5 & 4 - abd & opp of dig 5

- flx, abd and add of MCP Dig. 5, 4, 3, and 2

- ext of Dig. 5, 4, 3, and 2

- add of dig 1

- sensory: dorsal and palmar surfaces of the little and

ring fingers

- ext of forearm

- elbow flex (brachioradialis) and ext (anconeous)

- forearm sup, wrist ext, radial dev

- finger ext, thumb ext and abd

- C6 C7 Sensory: dorsum of the hand 

Total loss of brachial plexus

- Pt able to: scapular elevation, retraction and depression because the trapezius is not involved

- affects: C6, C7, C8 and T1 - serratus ant (LTN)

- upr, mid and inf trunks - the lat, post and med cords

- mc, median, radial, axillary and ulnar nerves

*mid & inf trunks, med cord and ulnar n. are affected totally

- weakness in scap protraction and depression

- glenohumeral add, abd, flx, ext, ir and er

- elbow flx and ext - forearm sup and pron

- loss of wrist flex, ext and dev - finger and thumb flx and ext

- finger and thumb abd and add - little finger and thumb opp

- sensory: to the dorsal and palmar surfaces of the hand

- sensory to the med and lat aspects of the arm and forearm. 

- not affected: DSN (C5) - upr trunk, lat and post cord.

- mc, median, radial and axillary nerve only partially affected. 

- no weakness scapular elevation and retraction

**Notice that movements of the glenohumeral joint, elbow, forearm, wrist and hand are

mainly involved as is sensation to the arm, forearm and hand.

 -affect: C7, C8 and T1: serratus ant 

- mid and inf trunk the lat, post and med cords

- the mc, median, radial and ulnar nerves. 

- partially affect: lat cord, post cord, mc, median, and radial nerve.

- The med cord and the ulnar nerve will be affected totally.

- weakness: scap dep, elbow flex, ext, forearm sup and pronation

- wrist flex, ext and dev

- Marked weakness or loss of finger and thumb flex, ext and thumb abd

- loss of finger abd and add - loss of thumb add and Dig 5 and 1 opp

- sensory: to the dorsal and palmar surfaces of the hand except for the thumb

- sensory: to the med aspect of the arm and forearm

- not affect: dorsal scap (C5), upr trunk (C5, C6) - the axillary n. (C5, C6 only)

- or sensation to the dorsum and palmar surfaces of the thumb (C6).

-no weakness: scap protraction, elevation and retraction

- glenohumeral abd, add, flex, ext, ir and er

**Note that movements of the elbow, forearm, wrist and hand are mainly involved as is sensation to the medial side of the upper extremity and hand.

- affect: C8 and T1 spinal nerve components - inf trunk, med

cord, ulnar n.

- partially affect: the radial and median n

- weakness in scap dep, glenohumeral add and ir

- elbow ext; forearm pron; wrist flex, ext & dev

- finger and thumb ext - thumb abd and opp.

- loss of Dig 5 flex, abd, and opp - finger add and abd - thumb add

- sensory on the med side of the forearm and arm

- sensory: dorsal and palmar aspects of dig 5 and ulnar half of the dig 4

**Note that movements of the hand and

sensation to the ulnar side of the hand and medial forearm are involved

T1 spinal inj

- affect: mainly movements of the finger and thumb

- affect part of the median and unlar ns

- sensory along the med aspect of the arm.

- weakness in finger ext - thumb flex, abd and opp - dig 5 flex, abd and opp

- marked weakness or loss in thumb add - finger add and abd.

**Notice that movements in the hand produced by intrinsic muscles innervated by the ulnar nerve are mainly involved.