368 



OPENING THE GUTTURAL POUCHES. 



may be injected into the sac through the tube. Where the catheter 

 is passed in an animal which has been cast, the mouth should be 

 placed rather higher, in order to bring the bent point of the catheter 



Fig. 333.— Deep tissues in the parotid region ;] opening the guttural pouch. 

 (Semi-schematic. ) 

 A, Atlas ; B, styloid process of the occipital ; C, obliquus capitis superior -, D, 

 tendon of the complexus and rectus capitis posticus major (Percivall's com- 

 plexus minor) ; E, parotid gland ; F, occipito-hyoideus muscle ; G, post 

 auricular artery ; H, hyoid bone ; JJ, external carotid artery ; K, submaxillary 

 artery ; L, digastricus ; the stylo-maxillaris forms the posterior portion of 

 this muscular mass. The dotted line indicates the point where the occipito- 

 hyoideus is usually punctured. 



sideways into the Eustachian tube, by moving the handle towards the 

 septum nasi. 



For opening the guttural pouch various operations have been 

 recommended, all of which have their advantages and their draw- 



