SYNDESMOLOGY. 



GENERAL SYNDESMOLOGY. 



The boi ; the body arc conne( ted with each other in 

 bones may be connected simply by intervening ligamenl r any other I 



connective tissue, this form of • tion between two parts of thi skeleton 



synartht or the cartilaginous articular Mir: neigh 



approximated that the two oppo form to each other and 



spai ich a mode of connection is a diarthrosis or a joint, and far the m> 



mode of connection, allowing of a much more extensive ran ion between the 



SYNARTHROSES. 



I tie synarthi ire < lassified, according to the character of the I 



of the bones, into syndesmoses, synchondroses, and symphy mixed 

 syndesmoses the intervening substance is fibr nnecth 



tissue, see the Sobotta Huber Atlas and Epitome ^i Histolo 

 cartilage, and in the mixed synarthr cartilage and fibrous 



Synchondroses arc rare in the adult body, but arc found in th in the un 



skeleton which subsequently become ossified, such as the >.^i\\\y 

 diaphyses of the long bones (see page 21 . An example is furnished by th 

 rili to the manubrium of the sternum. 



The syndi ubdivided into two groups, trtu 



and 3 The true syndesmoses are those in which inter > ligara 



actually connect the bones with each other, and, like the joints, tin 



by accessory ligaments. The lower end of the fibula is firmlv 1 th the libi »uch 



a syndesmosis. In the sutures ^i the skull, h r, the s 



neel the bones, which are united by the sutures themsel m. A 



peculiar characteristic ^i the suture is the interlocking ^i the contij 

 of serrated projections in the serrate sutures, hut if ><n<~- bony m 

 shingles on a roof, it is spoken ^i as a sguam \ 



the relatively infrequent harnti . vhich is the simple firm ous 



bono, and the fixation oi the teeth in the alveoli ^i th< nay al< 



oi .syndesmosis, the gom pilosis, the syndesmotic mass in thi shed by a thin 



layer oi periosteum (see page 68 . 



In the mixed synarthroses or symphyses th the ends oi the bom >ro- 



cartilage. Typical examples are furnished by the connections of the bodies of the vertebrae 



