100 



PLATE L. 



MUSCLES 



A Pharyngeal aponeurosis showing above 



the edge of the superior constrictor. 



This space is called the sinus of 



Morgagni. 



B Superior constrictor. 

 C Middle constrictor. 

 D Inferior constrictor. 

 E Placed over the great comua of the 



hyoid bone. 

 F (Esophagus. 

 G Trachea. 

 H Thyroid gland. 

 I Posterior belly of the digastric. 

 K Stylo-hyoid. 

 L Stylo-pharyngeus. 



M Internal pterygoid. 



N Levator palati. 



Masseter. 



P Sterno-mastoid. 



R Trachelo-mastoid and splenius turned 



back. 



8 Parotid gland. 

 T Submaxillary gland. 

 U Posterior edge of ramus of jaw. 

 V Base of styloid process. 

 W Eectus capitis anticus major. 

 X Eectus capitis anticus minor. 

 Y Basilar process of the occipital bone. 

 Z Jugular fossa. 

 * Digastric fossa. 



VESSELS 



ft Common carotid. 



b Internal carotid. 



c External carotid. 



d Facial. 



c Submaxillary branch of facial. 



/ Superior thyroid. 



g Occipital. 



h Meningeal branch of the occipital 



ascending to pass through jugular 



foramen. 



k Sterno-mastoid twig of occipital. 

 I Posterior auricular, 

 ra Stylo-mastoid branch of posterior 



auricular. 



n Ascending pharyngeal. 

 o Meningeal branch of the ascending 



pharyngeal passing through jugular 



foramen. 

 p Pharyngeal branches of ascending 



pharyngeal. 



r Ascending palatine branch of facial. 

 s Sterno-mastoid branch of superior 



thyroid. 



t Internal jugular vein. 

 v Internal maxillary artery. 

 w Inferior thyroid vessels. 

 x Temporo-maxillary vein. 

 y Posterior division of temporo-maxillary 



going to join external jugular. 

 z Anterior division joining with the 

 * Facial and emptying into the internal 



jugular. 



NERVES 



1 Glosso-pharyngeal. 



2 Pharyngeal branches of glosso- 



pharyngeal. 

 8 Muscular twig to glosso-pharyngeus. 



4 Pneumogastric. 



5 Pharyngeal branches of vagus. 



6 Superior laryngeal branch of vagus. 



7 Internal laryngeal branch of vagus. 



8 External laryngeal branch of vagus. 



9 Pharyngeal twig from the external 



laryngeal. 



10 Twigs to thyroid gland from external 



laryngeal. 



11 Spinal accessory. 



12 Accessory portion of spinal accessory 



joining the lower ganglion of vagus. 



13 Hypoglossal. 



14 Descendens noni (cervicis). 



15 Superior cervical ganglion of sym- 



pathetic. 



16 Pharyngeal branches from the sym- 



pathetic ganglion. 



17 The ascending branches of the sym- 



pathetic splitting on the internal 

 carotid to form the plexuses. 



18 Lingual nerve. 



19 Inferior dental. 



20 Communication from first cervical to 



hypoglossal. 



21 Sixth pair of nerves. 



22 Seventh and eighth pair. 



23 Fifth pair. 



24 Fourth pair. 



25 Facial nerve. 



26 Eecurrent laryngeal. 



