912 



THE NERVOUS SYSTEM 



SUPERFICIAL BRANCHES OF THE CERVICAL PLEXUS 



The superficial branches are described, according to the direction in which they 

 run, as ascending, transverse, and descending branches. The ascending branches 

 are the small occipital and the great auricular nerves. There is only one transverse 



FIG 675. ORIGIN OF THE CERVICAL AND BIJACHIAL PLEXUS. (After Toldt, "Atlas of Human 

 Anatomy," Keuinan, London and New \ork.) 



MUSCULAR BRANCH TO RECTU.S CA I'lTIK ANTERIOR rtmrrn ir'TFI'V 



AND LATERALS AND L(iN<t CX CAl'lll* INTI:R.\AL CAROTID ARTER 1 



Hectus capitis lateralis v ^ 



Rentus capita anterior 



MUSCULAR RRANCH TO LONGUS CAPITIS^ 



AND LONGUS COLLI \ 



COMMUNICATING BRANCH TO 

 DESCENDENS BYP09LOS81 \ 



SMALL OCCIPITAL ^ 



COMMUNICATING BRANCH TO \v ^^^ 

 EXTERNAL BRANCH OF SPINAL ACCESSORY ... V 



GREAT A URICULAR .,,^ 

 CERVICAL CUTANEOUS 



MUSCULAR BRANCH -,,* 

 SUPRA-CLAVICULARS - 



PHRENIC 

 DORSAL SCAPULAR 



SUPRA-SCAPULAR ^ 



AXILLARY 



\ 



\ 



RADIAL 



MUSCULO- 

 CUTANEOUS 



MEDIAN 



ULNA R 

 MIDDLE - 

 ANTI- ^ 

 BRACHIAL * 

 CUTANEOUS 

 SUBSCAPULAR 



LONG THORACIC' 



INTERS At 



CAROTID NERVE 



FIRST CERVICAL 



M.I: VE 



\ 



. 

 MUSICAS8 



SECOND CERVI- 

 CAL NERVE 



SUPERIOR 

 CERVICAL 

 GAJfOLJOJf 



THllll) AMI 



run: 'i'l i < I-:RVI- 



I'AL NERVES 

 I! AM UK COM- 



, Jir. \ICANS 



Vi'rttbrul artery 



<:AX<:LIATED 



CORD 

 1-irill, SIXTH, 



- A\I> >/-. 

 CERVICAL 

 NMRVIS} 



MIDDLE CERVI- 

 CAL GANGLION 



EH ill Til CKRVI- 

 < ,1 /, NER I E 



INFERIOR 

 CERVICAL 

 QA&6L1ON 



I-'IKST THOR- 

 ' ACIC QANOLION 



FIRST TH OR- 

 ACH.' NEliVE 



VERTEBRAL 

 PLEXUS 



"* SUKCLAVIAN 

 PLEXUS 



', AKSA 



*T UCLA VI A 

 (V1EUSXENI1) 



Sitbclarian artery 



Serratus anterior 



ANTERIOR THORACIC 



Scalenus medius 



branch, the cervical cutaneous (transverse cervical), and the descending branches 

 are distinguished as the supraclavicular nerves. 



The ascending branches. (1) The Small Occipital Nerve (fig. 675) arises from 



