ARTICULATIONS OF THE HYOID SERIES. 



135 



IS formed by the condyle of the inferior maxilla, and the condyle 

 and glenoid cavity of the temporal bone. The meniscus ia 

 irregular and flattened from above downwards, the superior 

 surface being concavo-convex to correspond with the condyle and 

 glenoid cavity above ; its 

 inferior surface being con- 

 cave for the reception of 

 the maxillary condyle. The 

 capsular ligament is at- 

 tached to the circumference 

 of the meniscus, so forming 

 two synovial cavities. The 

 posteriorligsiment runs from 

 the mastoid process, and 

 the external lateral one 

 from the zygomatic arch of 

 the temporal bone, both 

 going to the neck of the 

 maxilla ; both are mere thickenings of the capsular ligament. 

 This joint admits of lateral motion, extension, flexion, and in the 

 herbivora elevation and depression. 



Fig. 49. 



Eight temporo-maxillary articulation— external view. 

 a, The meniscus ; b, External lateral, and c. Posterior 

 ligaments. 



ARTICULATIONS OF THE HYOID SERIES. 



The Eyoid articulations are as follows. The temporo^ 

 hyoid articulation is amphiarthrodial, the superior angle of 



Fig. 50. '^ 



Hyoid articulations, a, Point going to form the tem- 

 poro-hyoid articulation; b, Eudimentary second comi- 

 culum ; c. Proximal, and d, Distal interhyoid articulations. 



the comu articulating with the hyoia process of the petrosal 



