i6o 



THE HEAD AND NECK 



Septal cartilage 



Perpendicular lamina of ethmoid 



Vomer 



Splienoidal air sinus 



Opening of auditory (Eustachian) tube 

 Torus tubarius (Eustachian cushion) 



Mylo-hyoid - 

 Investing layer of deep 

 cervical fascia 

 Submental lymph gland 



Thyreoid cartilage 



Lamina of cricoid cartilage 



Pretracheal fascia 



FIG. 50. Median Section through Head and Neck. A tuberculous abscess 

 is depicted, originating in the body of the second cervical vertebra and 

 descending behind the prevertebral fascia. 



