SYNOPSIS OF MUSCULAR NERVES. 6?5 



The rectus capitis anticus major ar,d minor are supplied by twigs from the 

 upper cervical nerves ; the longus colli and scaleni muscles by twigs from 

 the lower cervical nerves. 



The muscles of the chest, viz , the intercostals, subcostals, levatores cos- 

 tarum, arid triangularis sterni, are supplied by the intercostal nerves. 



The obliqui, transversus, and rectus of the abdomen are supplied by the 

 lower intercostal nerves ; and the oblique and transverse muscles also get 

 branches from the ilio-inguiual and ilio hypogastric nerves. The cremaster 

 muscle is supplied by the genital branch of the genito-crural nerve. 



The quadratus lumborum (like the psoas) receives small branches from 

 the lumbar nerves before they form the plexus. 



The diaphragm receives the phrenic nerves from the fourth and fifth cer- 

 vical nerves, and likewise sympathetic filaments from the plexuses round the 

 phrenic arteries. 



The muscles of the urethra and penis are supplied by the pudic nerve ; 

 the levator and sphincter ani by the pudic an.l by the fourth and fifth 

 S'icrai and the coccygeal nerves ; and the coccyyeus muscle by the three last 

 named nerves. 



MUSCLES ATTACHING THE UPPER LIMB TO THE TRUNK. 



The trapezius and the sterno-cleido-mastoid receive the distribution of the 

 spinal accessory nerve, and, in union with it, filaments from the cervical 

 plexus. 



The latissimus dorsi receives the long subscapular nerve. 



The rhomboidei are supplied by a special branch from the anterior 

 division of the fifth cervical nerve. 



The levator anguli scapulae is supplied by branches from the anterior 

 division of the third cervical nerve, and sometimes partly also by the branch 

 to the rhomboid muscles. 



The serratus majnus has a special nerve, the posterior thoracic, derived 

 from the fifth and sixth cervical nerves. 



The subclavius receives a special branch from the place of union of the 

 fifth and sixth cervical nerves. 



The pectorales are supplied by the anterior thoracic branches of the 

 brachial plexus, the larger muscle receiviug filaments from both these 

 nerves, and the smaller from the inner only. 



MUSCLES OF THE UPPER LIMB. 



Muscles of the shoulder. The supraspinatus and infraspinatus are sup- 

 plied by the suprascapular nerve ; the subsoapularis by the two smaller 

 subscapular nerves ; the teres major by the second subscapular, and the 

 deltoid and teres minor by the circumflex nerve. 



Posterior muscles of the arm and forearm. The triceps, anconeus, supi- 

 nator longus, and extensor carpi radialis Lmgior are supplied by direct branches 

 of the musculo-spiral nerve ; while the extensor carpi radialis brevior and the 

 other extensor muscles iti the forearm receive their branches from the pos- 

 terior iuterosseous division of that nerve. 



Anterior muscles of the arm and forearm. The coraco-brachialis, biceps, 

 and brachialis anticus are supplied by the musculo- cutaneous nerve : the 

 brachialis anticus likewise generally receives a twig from the musculo- 

 spiral nerve. The muscles in front of the forearm are supplied by the 

 median nerve, with the exception of the flexor carpi uluaris and the 

 ulnar half of the flexor profuudus digitorum, which are supplied by the 



