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PLATE XL. 



MUSCLES 



A Sterno-mastoid. 



B Sterno-hyoid. 



C Sterno-thyroid. 



D Thyro-hyoid. 



E Omo-hyoid. 



F Stylo-hyoid. 



G Hyoglossus. 



H Digastric. 



K Supra-liyoid aponeurosia. 



L Mylo-hyoid. 



M Masseter. 



N Platysma. 



Splenius. 



P Levator anguli scapula. 

 R Scalenus medius. 

 8 Scalenus anticus. 

 T Deep surface of trapezius. 

 U Parotid gland. 

 V Submaxillary gland. 

 W Great cornua of hyoid bone. 

 X Thyro-hyoid membrane. 

 Z Ponium Adami. 



t Lymphatic glands under sterno-mas- 

 toid. 



VESSELS 



a Common carotid. 



b External carotid. 



c Internal carotid. 



d Occipital artery. 



e Facial artery. 



/ Sterno-mastoid branch of occipital. 



g Superior thyroid. 



h Superior laryngeal branch of superior 



thyroid. 

 t Sterno-mastoid branch of superior 



thyroid. 



k Submental branch of facial. 

 I Internal jugular vein. 

 m Anterior division of temporo-maxillary 



vein joining facial vein. 

 o External jugular. 

 p Posterior auricular vein. 

 r Posterior auricular artery. 

 s Supra- scapular artery. 



NERVES 



1 Hypoglossal. 



2 Desceudens noni or cervicis. 



3 Twig from hypoglossal to thyro-hyoid. 



4 Twig from descendens noni to sterno- 



hyoid. 



5 Spinal accessory. 



6 Great auricular. 



7 Small occipital. 



8 An accessory or third occipital from the 



third cervical. 



9 Communication from third and fourth 



cervical to join spinal accessory in 

 trapezius. 



10 Supra-clavicular branches of cervical 



plexus. 



11 Cords of brachial plexus. 



12 Posterior auricular branch of facial. 



13 Mylo-hyoid branch of inferior dental. 



14 Superior laryngeal branch of vagus. 



