82 



PL A TE XL/. 



MUSCLES 



A Sterno-mastoid. 



B Trapezius. 



C Splenius capitis. 



D Splenius colli. 



E Levator anguli scapulaB. 



F Scalenus medius. 



G Scalenus anticus. 



H Omo-hyoid. 



I Sterno-hyoid. 



K Stemo-thyroid. 



L Thyro-hyoid. 



M Crico-thyroid. 



N Digastric. 



Supra-liyoid aponeurosia. 



P Stylo-hyoid. 



R Hyoglossus. 



8 Masseter. 



T Platysma. 



U Thyro-hyoid membrane. 



V Submaxillary gland. 



W Thyroid gland. 



X Subclavius muscle. 



Y Capsular ligament of lower jaw. 



Z Inferior constrictor of pharynx. 



t Stenson's duct. 



VESSELS 



a Left common carotid. 

 b Eight common carotid. 

 c Left internal jugular vein. 

 d Subclavian vein. 

 e External jugular vein. 

 / Supra-scapular vein. 

 'g Subclavian artery. 

 li Supra-scapular artery. 

 i Transverse cervical. 

 k Inferior thyroid. 



I Ascending cervical branch of inferior 

 thyroid. 



m Internal carotid. 



n External carotid. 



o Facial artery. 



p Occipital artery. 



r Posterior auricular. 



s Temporal 



t Transver.se facial branch of temporal. 



v Superior thyroid. 



x Superior laryngeal branch of superior 



thyroid. 

 z Middle thyroid vein. 



NERVES 



1 Facial. 



2 Temporal branch of facial. 21 

 8 Malar and infra-orbital branches. 22 



4 Buccal branch. 23 



5 Supra-mandibular branch. 24 



6 Inlra-mandibular branch. 



7 Posterior auricular branch. 25 



8 Communication between facial and 



an ric ulo - temporal . 



9 Spinal accessory. 26 



10 Hypoglossal. 



11 Descendens noni. 27 



12 Second cervical. 28 

 18 Third cervical. 29 



14 Fourth cervical. 80 



15 Fifth cervical. 



16 Sixth cervical. 31 



17 Seventh cervical. 32 



18 Eighth cervical. 



19 Communicans noni. 33 



20 Twig from second cervical to spinal 



accessory. 



Small occipital. 



Great auricular. 



Superficial cervical. 



Twig of communication from third 

 cervical to spinal accessory. 



Twig of communication from ihird 

 and fourth cervical to spinal ac- 

 cessory also supplying trapezius. 



Muscular branch to levator anguli 

 scapulas. 



Phrenic nerve. 



Nerve to subclavius. 



Posterior thoracic. 



Muscular twigs from ansa hypoglossi 

 to sterno-thyroid. 



Superior laryngeal. 



Supra-clavicular branches of cervical 

 plexus. 



Left recurrent laryngeal. 



