6o 



PR A CT1CAL A NA TOM \ '. 



a large nest of enlarged glands here at the bifurcation. The following are the 

 branches of the external carotid artery and their attendants : 



1. The superior thyroid- artery, vein, nerve, lymphatic. 



2. The lingual artery, vein, nerve, lymphatic. 



3. The facial artery, vein, nerve, lymphatic. 



4. The occipital artery, vein, nerve, lymphatic. 



5. The posterior auricular artery, vein, nerve, lymphatic. 



6. The ascending pliaryugeal artery, vein, nerve, lymphatic. 



7. The temporal artery, vein, nerve, lymphatic. 



8. The internal maxillary artery, vein, nerve, lymphatic. 



NOTE. It has been pointed out in a foregoing paragraph that sympathetic 

 nerves accompany every branch of the external carotid artery. Morris shows 

 that the deep lymphatics of the head and neck roughly follow the course ot 

 the deep arteries, and finally terminate in the glandulas concatenate previously 

 described. Hence in your dissection of the branches of the external carotid, 



Palato-glossua 



Descending palatinf itrl>-ri 

 Falato-pharyngeua 



TONSIL 



Ascending palatine branch 

 offiulal 



Tonsillar branch of dorsalis 



lingucs 



Tonsillar branch of facial 

 Stylo-KlosBue 



Dorsalis lingua 1 arterii 



Middle constrictor 



HYPOGL OSS A L NEK Vt. 



facial artery 



Posterior belly of digastric 

 and stylo-hyoid 

 Suprarhyoid branch 



SUP. LARYNGEALN. 



Infra-hyoid branch 

 Internal carotid artery 



Ran'nie artery 



Oento-hyo- 



glOUSUB 



.!;//// i.t 

 InrinuiL 



Hyo-Klossus 

 Snblingwil 

 artery 



- Genio-hyoid 

 Anterior belly 

 of digastric 



ttfttrjn 



Superior thyroid artery 



External carotid artery 

 Common carotid artery 



FIG. 32. SCHKMK or THE LINGUAL ARTKRY. 



you will remember you can always find the vein corresponding to the artery ; 

 the sympathetics may be found by treating the artery with ether and formaline ; 

 the lymphatic glands can only be demonstrated when enlarged by disease. As to ' 

 the lymphatic, I would urgently request the student to study carefully the 

 schematic drawings of these vessels by Professor F. R. Sherwood, in Morris' 

 " Anatomy." 



Caution. Never use a cutting instrument in dissecting arteries. The forceps 

 or dissecting hook is all you need to divide the connective tissue. Handle veins 

 with gentle touch ; they are very easily ruptured. 



Specific Dissection. The lingual artery: (i) find this vessel above the 

 greater horn of the hyoid bone ; (2) a little below, and running parallel with, the 

 hypoglossal nerve ; (3) passing behind the free margin of the hyo-glossus muscle 

 to the tongue. (Fig. 32.) 



The Superior Thyroid Artery. (i) It is the first branch given off by the 

 external carotid ; (2) it goes to the upper part of the thyroid gland ; (3) it gives 

 off the superior laryngeal branch, which always accompanies the superior laryn- 



