THE ARTICULATIONS AND LIGAMENTS OF THE HEAD 



195 



Pterygospinous foramen 



Foramen pterygospinosum 



Sphenoidal sinus 



Sinus sphenoidalis 



Middle lacerate foramen 



! Foramen lacerum 



Pterygospinous ligament 

 /Lig. pterygospinosum 



, Spinous process of the sphenoid bone 

 / Spina angularis 



,' Carotid canal Canalis caroticus 

 Internal auditory aperture 



Porus acusticus internus 



Lingula f the inferior 



maxillary bone 

 Lingula mandibulas 



Internal pterygoid muscle 



M. pterygoideus internus 



Styloglossus muscle 

 M. Styloglossus 



Internal oblique line, or 

 mylohyoid ridge 



Linea mylohyoidea 



Body of the inferior maxillary 

 bone 



Corpus mandibulae 



v Styloid process Proc. styloideus 

 Sphenomandibular or internal 



lateral ligament 

 Lig. sphenomandibulare 

 Stylomandibular or stylomaxillary liga- 

 ment Lig. stylomandibulare 

 Radiations of the Stylomandibular or 

 stylomaxillary ligament in the deep 

 cervical fascia on the surface of the 

 internal pterygoid muscle 



Angle of the jaw 



Angulus mandibulae 



Stylohyoid ligament 

 Lig. stylohyoideum 



Great cornu 

 Cornu majus 



V, 



Body of the hyoid bone 



Corpus ossis hyoidei 



Synchondrosis of the great cornu 

 with the body of the hyoid bone 



- Small cornu 



Cornu minus 



Synovial articulation between the small 

 cornu and the body of the hyoid bone 



FIG. 426. ARTICULATIO MANDIBULARIS, TEMPOROMANDIBULAR OR TEMPOROMAXILLARY ARTICULATION : 

 LlGAMENTA SPHENOMANDIBULARE ET STYLOMANDIBULARE, SPHENOMANDIBULAR OR INTERNAL 

 LATERAL AND STYLOMANDIBULAR OR STYLOMAXILLARY LIGAMENT. RELATIONS OF THE STYLO- 

 MANDIBULAR OR STYLOMAXILLARY LIGAMENT TO STYLOGLOSSUS AND INTERNAL PTERYGOID 

 MUSCLES. LIGAMENTUM PTERYGOSPINOSUM, PTERYGOSPINOUS LIGAMENT. (THE POSTERIOR 

 PART OF THE FACIAL PORTION OF THE SKULL WITH THE ADJOINING PORTION OF THE BASE OF 

 THE SKULL, DIVIDED SAGITALLY SOMEWHAT TO THE LEFT OF THE MEDIAN PLANE.) 



The basilar and condylar portions of the occipital bone have been removed. 



Articulatio mandibularia Temporomandibular or temporomaxillary articulation. 



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