Chap. VI] 



ARTICULATIONS 



83 



(3) Sagittal suture. — This begins at the base of the nose, 

 extends along the middle line on the top of the crown, separates 

 the frontal bone into two parts/ the parietal bones from each 

 other, and ends at the posterior fontanelle. 



Fig. 61. — Diameters and Landmarks of the Fcetal Skull. Upper sur- 

 face. (Edgar.) 



Synchondrosis is usually a temporary form of joint. The 

 cartilage between the bones ossifies before adult life. Example : 

 the union of the sphenoid and occipital bones. 



1 That portion of the sagittal suture which separates the frontal bone into two 

 parts is often called the frontal suture. (See Fig. 61.) 



