486 



LYMPHATICS 



mastoid, and the Trapezius, where they are continuous with the axillary glands. 

 A few small glands are also found on the front and sides of the larynx. 



The deep cervical glands (fig. 249) are numerous and of large size ; they form 

 an uninterrupted chain along the sheath of the carotid artery and internal jugular 

 vein, lying by the side of the pharynx, oesophagus, and trachea, and extending 

 from the base of the skull to the thorax, where they communicate with the lym- 

 phatic glands in this cavity. 



Fig. 249. The Deep Lymphatics and Glands of the Neck and Thorax. 



The superficial and deep cervical lymphatics are a continuation of those already 

 described on the cranium and face. After traversing the glands in those regions, 

 they pass through the chain of glands which lie along the sheath of the carotid 

 vessels, being joined by the lymphatics from the pharynx, oesophagus, larynx., 

 trachea, and thyroid gland. At the lower part of the neck, after receiving 

 some lymphatics from the thorax, they unite into a single trunk, which termi- 

 nates on the left side, in the thoracic duct ; on the right side, in the right lym- 

 phatic duct. 



LYMPHATICS OF THE UPPER EXTREMITY. 



The Lymphatic Glands of the upper extremity (fig. 250) may be subdivided 

 into two sets, superficial and deep. 



