DISSECTION OF THE NECK. 



neck to the chest. This dissection will be facilitated by the removal of a 

 part or the whole of the clavicle. 



All the branches of the artery are in general easily found, except the 

 superior intercostal, which is to be sought in the thorax in front of the 

 neck of the first rib. On the branch (inferior thyroid) ascending to the 



Fig. 16. 



O 



A VIEW OF THE COMMON CAROTID AND SCBCLAVIAN ARTERIES (Quain's " Arteries"). 



1. Anterior scalenus, with the phrenic nerve 7. Subclavian vein. 



on it. 



2. Middle scalenus. 



3. Levator anguli scapulae. 



4. Omohyoideus. 



5. Rectus capitig anticus major. 



6. Common carotid artery. 



8. Suhclavian artery. 



9. Digastric muscle. 



10. Parotid gland. 



11. Submaxillary gland. 



12. Thyroid body. 



13. Trapezlus muscle, reflected. 



thyroid body, or near it, is the middle cervical ganglion of the sympathetic ; 

 and the dissector should follow downwards from it a small cardiac nerve 

 to the thorax. Only the origin and first part of the course of the arterial 

 branches can be now seen ; their termination is met with in other stages 

 of this dissection, or in the dissection of other parts of the body. 



Now the student should seek the small right lymphatic duct that opens 

 into the subclavian vein near its junction with the jugular. A notice of it 

 will be given with the lymphatics of the thorax. 



