12 SURGICAL APPLIED ANATOMY. [Chap. n. 



nerve has been resected (neurectomy) in the same 

 situation. 



The lymphatics from the occipital and posterior 

 parietal regions of the scalp enter the suboccipital and 

 mastoid glands ; those from the frontal and anterior 

 parietal regions go to the parotid glands, while some of 

 the vessels from the frontal region join the lymphatics 

 of the face, and end in the subm axillary glands. 



CHAPTER II. 



THE BONY VAULT OF THE CRANIUM. 



Position of the sutures. The bregma, or 

 point of junction of the coronal and sagittal sutures, 

 is in a line drawn vertically upwards from the 

 external auditory meatus, the head being in normal 

 position (Fig. 2). The lambda, or point of junction 

 of the lambdoid and sagittal sutures, lies in the 

 middle line, about 2f inches above the occipital 

 protuberance. The lambdoid suture is fairly re- 

 presented by the upper two-thirds of a line drawn 

 from the lambda to the apex of the mastoid process 

 on either side. The coronal suture lies along a line 

 drawn from the bregma to the middle of the zygo- 

 matic arch. On this line, at a spot about on a 

 level with the external angular process of the frontal 

 bone, and about 1J inches behind that process, is 

 the pterion, the region where four bones meet the 

 squamous bone, the great wing of the sphenoid, the 

 frontal and parietal bones. The summit of the squa- 

 mous suture is just two inches above the zygoma. 



In the normal subject all traces of the fontaiielles 

 and other uiiossified parts of the skull, disappear 



