OF THE HEAD, FACE, AND NECK. 



485 



lymphatic vessels from the lips, and are often found enlarged in cases cf malignant 

 disease of these parts. 



The deep lymphatics of the face are derived from the pituitary membrane of the 

 nose, the mucous membrane of the mouth and pharynx, and the contents of the 

 temporal and orbital fossae; they accompany the branches of the internal 

 maxillary artery, and terminate in the deep parotid and cervical lymphatic 

 glands. 



The deep lymphatics of the cranium consist of two sets, the meningeal and cere- 

 bral. The meningeal lymphatics accompany the meningeal vessels, escape through 

 foramina at the base of the skull, and join the deep cervical lymphatic glands. 



Fig. 248. The Superficial Lymphatics and Glands of the Head, Face and Neck. 



The cerebral lymphatics are described by Fohmann as being situated between the 

 arachnoid and pia mater, as well as in the choroid plexuses of the lateral ven. 

 tricles ; they accompany the trunks of the carotid and vertebral arteries, and pro- 

 bably 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 are placed in the course of the external jugular 

 vein, between the Platysma and Sterno-mastoid. They are most numerous at the 

 root of the neck, in the triangular interval between the clavicle, the Sterno- 



