THE ANTERIOR PART OF THE NECK 243 



carotid and the muscular subdivisions, and it lies superficial 

 to the internal jugular vein, the common carotid artery, the 

 descendens hypoglossi, the superior thyreoid artery, the ex- 

 ternal laryngeal nerve, the attachments of the sterno-thyreoid 

 and thyreo-hyoid muscles to the lamina of the thyreoid 



A 



Anterior facial vein -S 

 Mylo-hyoid',^. 



muscle""" 

 Common facial 



vein - 



Lingual vein.... 

 Small occipital N..__. 

 Great auricular N.-- 



Nervus 



cntaneus colli * 

 Internal jugular vein~T 

 Descending 

 cervical 

 nerves^ 

 Brachial.' 

 plexus 

 External, 

 jugular vein 

 Descendens 

 hypoglossi 



Anterior^ 

 jugular vein~l 



Inferior 

 thjTeoid veins'" 



Platysma 



External maxillai 

 artery 



Parotid gland 

 Submental lymph 



land 

 ubmaxilhry glai 



Sterno-mastoid an 

 Ext. carotid arter 



Sup. thyreoid art 

 Common carotid 

 artery 

 Lymph gland 



Thyreo-glossal du 

 'mo-hyoid 



'Crico-thyreoid 

 Sterno-hyoid 



Isthmus of thyreo 

 gland 



Sterno-thyreoid 



FIG. 99. Dissection of the Front of the Neck. The Right Sterno-mastoid 

 has been removed. 



cartilage; and immediately below its insertion it covers part 

 of the thyreo-hyoid membrane. Both bellies are supplied by 

 branches from the ansa hypoglossi. v/ 



Musculus Sternohyoideus. This arises from the posterior 

 aspect of the medial end of the clavicle, the posterior 

 sterno-clavicular ligament, and the posterior surface of the 

 manubrium. It is inserted into the lower border of the body 



ii 16 



