374 



HEAD AND NECK 



attached to the base of the skull, and it is united also to the 

 auditory tubes and the bony margins of the c/ioance. 



Dissection. The pharynx should now be opened by a vertical median 

 incision through the entire length of its posterior wall. At the upper 



Middle nasal concha 



Middle meatus 



Atrium 



Inferior 

 nasal concha 

 Inferior meatus 



Vestibule of 

 nasal cavity 



Genio-glossus 



Genio-hyoid ' 

 Mylo-hyoid 



Hyoid bone 

 Cartilage of epiglottis 



Thyreoid cartilage 



Superior meatus 



Recessus spheno-ethmoidalis 



Sphenoidal sinus 



/Hypophysis 



/Pharyngeal recess 

 xPharyngeal tonsil 



.---Orifice of auditory tube 



Upper surface 



of soft palate 



Salpingo-pharyngeal 



Pharyngo-palatine 



arch 

 Tonsil 



Pharyngeal surface 

 of tongue 



Epiglottis 



Cuneiform tubercle 



Corniculate cartilage 

 Laryngeal ventricle 

 Cricoid cartilage 



FIG. 149. Sagittal section, a little to the right of the median plane, 

 through the Nasal Cavity, the Mouth, Larynx, and Pharynx. 



extremity of this cut, the knife should be carried transversely, close to the 

 basis cranii. The stuffing should be removed and the mucous surface of 

 the pharynx cleansed. 



Interior of the Pharynx. The mucous membrane is now 

 exposed, and it should be noted that it is continuous, 



