MUSCULAR DISTRIBUTION. 



NERVE. ANTERIOR DIVISION. 



3rd cervical . . Rectus anticus major, Longus colli, Infrahyoid 

 muscles, Scalenus medius, Levator scapulae, 

 (Sterno-cleido-mastoid), 1 Trapezius, (Dia- 

 phragm). 



4th cervical . . Rectus anticus major, Longus colli, Scalenus 

 medius (and anticus), Diaphragm, Levator 

 scapulae, Trapezius. 



5th cervical . . Longus colli, Scaleni, (Diaphragm) . Levator sca- 

 pulae, Rhomboidei, Serratus magnus, Sub- 

 clavius, Supraspinatus, Infraspinatus, Teres 

 minor, Subscapularis, (Teres major), Deltoid, 

 (Pectoralis major), Biceps, Brachialis anticus. 



(>th cervical . . Longus colli, Scaleni, (Subclavius), Serratus 

 magnus, (Supraspinatus, Infraspinatus, Teres 

 minor), Subscapularis, Teres major, Deltoid, 

 Pectoralis major. Biceps, Brachialis anticus, 

 Pronator teres, Flexor carpi radialis, Supi- 

 nator longus and brevis, Extensores carpi 

 radiales, Abductor, Opponens and Flexor 

 brevis pollicis. 



7th cervical . . Longus colli. Scalenus medius,(Serratus magnus), 

 Pectoralis major and minor, Latissimus dorsi, 

 (Teres major), Coraco-brachialis, Triceps 

 brachii, Anconeus, Flexor sublimisdigitorum, 

 (Flexor profundus digitorum, Flexor longus 

 pollicis, Pronator quadratus), Extensores 

 radiales, Extensors of digits, Extensor carpi 

 ulnaris, (Abductor, Opponens and Flexor 

 brevis pollicis). 



Sth cervical . . Longus colli, Pectoralis major and minor, 

 Latissimus dorsi, Triceps brachii, Anconeus, 

 Flexors of digits, Flexor carpi ulnaris, Pro- 

 nator quadratus, Adductores pollicis, Inter- 

 ossei, Abductor, Flexor brevis and Opponens 

 minimi digiti. 



1st dorsal . . . Pectoralis major and minor, Flexors of digits, 

 Flexor carpi ulnaris, Pronator quadracus, 

 Intercostales. Levator costae, Serratus pos- 

 ticus superior. 



2nd dorsal . . Intercostales, Levator costae, Serratus posticus 

 superior, (Triangularis sterni). 



3rd dorsal . . ) Intercostales, Levatores costarum, Serratus 



4th dorsal . . \ posticus superior, Triangularis sterni. 



5th dorsal . . ) Intercostales, Levatores costarum, Triangularis 



(5th dorsal . . ] stemi, Obliquus externus, Rectus abdo- 

 minis. 



7th dorsal . . ) Intercostales, Levatores costarum, Subcostales, 



Hth dorsal . . f Obliquus extern as, Obliquus internus, 

 Transversalis abdominis, Rectus abdominis. 



J)th dorsal . . "i Intercostales, Levatores costarum, Subcostales, 



10th dorsal . > Serratus posticus inferior. Obliquus externus, 



llth dorsal . } Obliquus internus, Transversalis abdominis, 

 Rectus abdominis. 



12th dorsal . . (Quadratus lumborum), Obliquus externus, 

 Obliquus internus, Transversalis abdominis, 

 Rectus abdominis, Pyramidalis. 



1st lumbar . . Quadratus lumborum, (Obliquus internus, 

 Transversalis abdominis), Cremaster. 



2nd lumbar . . (Quadratus lumborum), Cremaster, Psoas 

 magnus, (Psoas parvus), Iliacus, Pectineus, 

 Adductor longus, Adductor brevis, Gracilis, 

 Sartorius. 



POSTERIOR DIVISION. 



Complexus, Transverso- 

 spinales, Splenius, Erec- 

 tor spinae. 



Transverso-spinales, Erec 

 tor spinas. 



1 Names enclosed in parentheses indicate that the muscles are not always supplied from the nerve- 

 root in question. 



