////: HEAD AXD M-:CK. 



61 



nerve; (-)) these structures, the superior laryngcal nerve and artery, pi' 

 the thyro-hyoid membrane ; (5) the anastomosis is feeble with the opposite side ; 

 free with the inferior laryngeal artery, and the distribution is to tin- gland and to 

 the depressor muscles of the hyoid bone that cover the gland. (Fit;. 28.) 



The facial artery: (i) often given off with the lingual; (2) note its dee]) 

 course behind the hypoglossal nerve, the stylo-hyoid muscle, the digastric 

 muscle, the parotid gland. It crosses the mandible in front of the masseter 

 muscle. Its specific sympathetic nerves are called nervi molles. (Fig. 17.) 



The facial vein (Fig. 18), you will note, takes a superficial course. It lies in 



Anterior branch of jtos- 

 i iur auricular 



Posterior auricular 



Internal juiiulnr rein 

 facia! artery 



\: 



Ojminon carotid 



Kilernal branch of 

 occipital 



Internal branch of 

 occipital 



Complexua 



Pricepa cervicit 



-Superior oblique 

 Trachelo-maatoid, out 

 SpleniuB oapltls. cut 

 Mrningeal branch fit 



fftfrno-mastoid bj-anch qf 

 occipital 



Internal carotid 

 Sterno-mutold 

 Kitemal carotid 

 Trapezlus 



'''' 33- SCHEME OK OCCIPITAL AND POSTERIOR AURICULAR ARTERIES. 



front of the structures behind which the facial artery passes. It opens into the 

 external jugular vein. In your dissection show all the structures by which the 

 facial artery and vein are separated in their cervical stage. 

 Branches of the facial artery in the neck are : 



1 . To the stylo-hyoid, internal pterygoid, masseter, and buccinator. 



2. Submaxillary branches four, to the submaxillary gland. 



3. Submental artery to structures under the chin. 



4. Tonsillar branches to the tonsil and tongue. 



5. Ascending palatine branches to the soft palate. 



The Occipital Artery (Fig. 33). (i) Find the hypoglossal nerve passing 



