1 86 



THE POCKET ANATOMY 



Behind. 

 Longi colli. 

 Recti capitis antici. 

 Upper 5 cervical 



vertebrae. 

 Prevertebral fascia. 



Below. 

 (Esophagus 



Relations : 



Laterally. 

 Styloid process. 

 Stylo-hyoid. ^ ^ 



Stylo-pharyngeus. jo 

 Internal pterygoid. I & 

 Sterno-thyroid. I 

 Sterno-hyoid. J ^ 

 Internal and common > 



carotid. 



Ascending pharyngeal. 

 Ascending palatine. 

 Tonsillar. 



Internal jugular vein. 

 Glosso-phary ngeal . 

 Pneumogastric. 

 Sympathetic. 

 Spinal accessory. 

 Hypoglossal. 

 Superior laryngeal. 

 Thyroid gland. 



Muscles : inferior, middle and superior constrictors, stylo- 

 pharyngeus, palato-pharyngeus, salpingo-pharyngeus. (Vide 

 pp. 29 and 30.) 



A runes : Ascending pharyngeal ; pterygo-palatine ; ascend- 

 ing and descending palatine ; dorsalis linguae ; tonsillar. 



Openings : the posterior nares (2), placed in the upper part of 

 the anterior wall ; Eustachian tubes (2), open one on each side 

 at the upper part; the mouth, situated just below the posterior 

 nares ; the laryngeal and cesophageal openings. 



The pharyngeal wall consists of 4 layers : (i) internally a 

 striated squamous epithelium with submucous tissue ; (2) 

 pharyngeal aponeurosis ; (3) muscular ; (4) an indistinct layer 

 of fascia called the bucco-pharyngeal fascia, derived from the 

 deep cervical fascia. 



The pharyngeal aponeurosis forms the base of the walls of 

 the pharynx, lying between the mucous membrane, and the 

 muscles. It is thin below, but strong above, where it fills 

 in the space above the upper crescentic margin of the superior 

 constrictor (sinus of Morgagni), over which the Eustachian 

 tube passes. It is attached above to the body of the sphenoid 

 and petrous portion of the temporal, being strengthened in the 

 middle line by a process of fascia attached to the pharyngeal 

 tubercle on the basilar part of the occipital bone. Inferiorly 

 it becomes lost between the muscular and mucous strata. 



