HYOVEETEBROTOMY- 



453 



Fig. 395.— Antero-Posterior Section of the Head, showing the Mouth, Fances, 

 and Nasal Cavities. 



1, genio-glossuB muscle; 2, genio-hyoideus muscle; 3, the velum palati; 4, pharyn- 

 geal cavity; 5, CBsophagus; 6, guttural pouches; 7, pharyngeal opening of the Eustach- 

 ian tube; 8, laryngeal cavity; 9, lateral ventricle of the iarynx; 10, trachea; 11, ethmoi- 

 dal turbinated; 12, maxillary turbinated; 13, ethmoidal volutes; 14, cerebral compart- 

 ment of the cranian cavity; 15, cerebellar compartment of the same; 16, falx cerebri; 

 17, tentorium cerebelli; 18, superior lip; 19, inferior lip. 



the styloid process of the occiiDital bone and the superior border 

 of the long branch of the hyoid, through which the puncture is 

 made in order to enter the guttural pouches, and back of this the 

 stylo-hyoideus and the superior border of the digastricus ; then, 

 6th, on the deepest layer, the guttural pouches are found supe- 

 riorly, resting intimately on the internal f^e of the stylo-hyoideus 

 muscle, inferiorly closely cemented with the posterior face of the 

 pharynx and posteriorly with the superior extremity of the long 

 muscle of the neck ; and 7th, the numerous and important blood 

 vessels and nerves belonging to the parotid region. 



