626 



THE LYMPHATIC SYSTEM 



the occipital and posterior auricular lymphatic glands, and finally join the cervi- 

 cal glands. 



The Lymphatic Vessels of the Face are divided into two sets, superficial and 

 deep. 



The superficial lymphatic vessels of the face are more numerous than those of 

 the head, and commence over its entire surface. Those from the frontal region 

 accompany the frontal vessels ; they then pass obliquely across the face, running 



FIG. 338. The superficial lymphatics and glands of the head, face, and neck. 



with the facial vein, pass through the buccal glands on the surface of the Bucci- 

 nator muscle, and join the submaxillary lymphatic glands. The latter receive the 

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

 disease of those parts. 



The lymphatic vessels of the cranium consist of two sets, the meningeal and 

 cerebral. The meningeal lymphatics accompany the meningeal vessels, escape 

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

 glands. The cerebral lymphatics are described by Eshmann as being situated 

 between the arachnoid and pia mater, as well as in the choroid plexuses of the 

 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 lymphatics of the orbit and of the temporal and zygomatic fossae run with 



