Muscle Innervations

Front 1

Rhomboids (sometimes levator scapulae)

Back 1

Dorsal scapular C5

Front 2

Serratus anterior

Back 2

Long thoracic C5-C7

Front 3

Supraspinatus/infraspinatus

Back 3

Suprascapular C5-C6

Front 4

-Subclavius muscle
-Sternoclavicular joint

Back 4

Subclavian nerve C5-C6

Front 5

Pec major, sometimes minor

Back 5

Lateral pectoral C5-C7

Front 6

-Coracobrachialis
-Biceps brachii
-Brachialis

Back 6

Musculocutaneous C5-C7

Front 7

Anterior forearm flexors
-Except what?

Back 7

Median nerve C6-T1
-Except flexor carpi ulnaris and ulnar half of flexor digitorum profundus

Front 8

Intrinsic muscles in thenar side of palm

Back 8

Median nerve C6-T1

Front 9

Pecs minor and sternocostal part of pec major

Back 9

Medial pectoral nerve C8-T1

Front 10

Skin of medial arm down to medial epicondyle of humerus and ulnar olecranon:

Back 10

Medial cutaneous nerve to arm, C8-T1

Front 11

Skin of medial forearm down to wrist:

Back 11

Medial cutaneous nerve to forearm, C8-T1

Front 12

-Flexor carpi ulnaris
-Ulnar half of flxor digitorum profundus
-Most intrinsic hand muscles
-Skin of hand medial to axial line of digit 4

Back 12

Ulnar nerve, C8/T1, often C7

Front 13

Superior portion of subscapularis

Back 13

Upper subscapular nerve C5

Front 14

Inferior subscapularis, teres major

Back 14

Lower subscapular C6

Front 15

Latissimus dorsi

Back 15

Thoracodorsal C7, C6/C8

Front 16

Pectoralis major

Back 16

Lateral/medial pectoral nerves
-Clavicular head c5-c6
-Sternocostal head c7 c8 t1

Front 17

Pectoralis minor

Back 17

Medial pectoral nerve c8 t1

Front 18

Subclavius

Back 18

nerve to subclavius c5 c6

Front 19

Serratus anterior

Back 19

Long thoracic nerve c5-c7

Front 20

Trapezius

Back 20

Accessory nerve CN 11 motor
C3/C4 spinal nerves pain/proprio

Front 21

Latissimus dorsi

Back 21

Thoracodorsal nerve C7-C8

Front 22

Levator scapulae

Back 22

Dorsal scapular C5
c3/c4 Cervical nerves

Front 23

Rhomboids

Back 23

Dorsal scapular C4/C5

Front 24

Deltoid

Back 24

Axillary nerve C5/C6

Front 25

Supraspinatus

Back 25

Suprascapular nerve C4-C6

Front 26

Infraspinatus

Back 26

Suprascapular nerve C5-c6

Front 27

Teres minor

Back 27

Axillary nerve C5/C6

Front 28

Teres major

Back 28

Lower subscapular nerve C5/C6

Front 29

Subscapularis

Back 29

Upper and lower subscapular nn.
C5-C7

Front 30

Biceps brachii

Back 30

Musculocutaneous C5-C6

Front 31

Brachialis

Back 31

Musculocutaneous nerve C5-C6

Front 32

Coracobrachialis

Back 32

Musculocutaneous nerve C5-C6, C7

Front 33

Triceps brachii

Back 33

Radial nerve c6-c8

Front 34

Anconeus

Back 34

Radial nerve C7-T1

Front 35

Pronator teres

Back 35

Median nerve C6-C7

Front 36

Flexor carpi radialis FCR

Back 36

Median nerve C6-C7

Front 37

Palmaris longus

Back 37

Median nerve C7-C8

Front 38

Flexor carpi ulnaris

Back 38

Ulnar nerve C7-C8

Front 39

Flexor digitorum superficialis

Back 39

Median nerve C7-T1

Front 40

Flexor digitorum profundus

Back 40

-Medial part = Ulnar n. C8-T1
-Laterl part = Anterior interosseous nerve from the median n. C8-T1

Front 41

Flexor pollicis longus

Back 41

Anterior interosseous nerve from Median nerve C8-T1

Front 42

Brachioradialis

Back 42

Radial nerve C5-C7

Front 43

Extensor carpi radialis longus

Back 43

Radial nerve C6-C7

Front 44

Extensor carpi radialis brevis

Back 44

Deep branch of radial nerve