OF THE 



683 



lateral ventricles ; they accompany the trunks of the carotid and vertebral arteries, 

 and probably pass through foramina at the base of the skull to terminate in the 

 deep cervical glands. They have not at present been demonstrated in the dura 

 mater or in the substance of the brain. 



The Lymphatic Glands of the Neck are divided into two sets, superficial and 

 deep. 



The superficial cervical glands may be arranged in three sets: (1) The 

 axillary, ten to fifteen in number, situated beneath the body of the lower 



FIG. 396. The deep lymphatics and glands of the neck and thorax. 



jaw in the submaxillary triangle ; (2) suprahyoid '. situated in the middle line of the 

 neck, between the anterior bellies of the two digastric muscles ; and (3) cervical. 

 placed in the course of the external jugular rein between the Platysma and deep 

 fascia. They are most numerous at the root of the neck, in the triangular 

 interval between the clavicle, the Sterno-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 (Fi'g. 396) are numerous and of large size ; they form 

 a 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 lymphatic glands in that 

 cavity. They are subdivided into two sets : an upper, ten to twenty in number, 



