TABLE OP DEVELOPEMENTS, ARTICULATIONS, ETC. 53 



coronoid process ; it is sharp and pointed, and gives attachment by 

 its inner surface to the temporal muscle. The anterior border of 

 the coronoid process is grooved at its lower part for the buccinator 

 muscle. The posterior process is the condyle of the lower jaw, 

 which is flattened from before backwards, and smooth upon its 

 upper surface, to articulate with the inter-articular fibre-cartilage. 

 The constriction around the base of the condyle is its neck, into 

 which is inserted the external pterygoid muscle. The sigmoid 

 notch is crossed by the masseteric artery and nerve. 



The internal surface of the ramus is marked near its centre by a 

 large oblique foramen, the inferior dental,* for the inferior dental 

 artery and nerve. Around this opening is a rough margin, to which 

 is attached the internal lateral ligament, and passing downwards 

 from the opening a narrow groove which lodges the mylo-hyoidean 

 nerve. To the rough surface above, and in front of the inferior 

 dental foramen, is attached the temporal muscle, and to that below 

 it the internal pterygoid. The internal surface of the neck of the 

 condyle gives attachment to the external pterygoid muscle ; and the 

 angle to the stylo-maxillary ligament. 



Developement. By two centres ; one for each lateral half, the two 

 sides meeting at the symphysis, where they become united. 



Articulations. With the glenoid fossas of the two temporal bones, 

 through the medium of a fibro-cartilage. 



Attachment of Muscles. To fourteen pairs; by the external sur- 

 face commencing at the symphysis, and proceeding outwards, 

 levator labii inferioris, depressor labii inferioris, depressor anguli 

 oris, platysma myoides, buccinator and masseter; by the internal 

 surface also commencing at the symphysis, the genio-hyo-glossus, 

 genio-hyoideus, mylo-hyoideus, digastricus, superior constrictor, 

 temporal, external pterygoid, and internal pterygoid. 



Table of the Points of Developement, Articulations, and Attachment of 

 Muscles, of the Bones of the Head. 



Attachment of 

 Developement. Articulations. muscles. 



Occipital ... 4 6 13 pairs. 



Parietal ... 1 5 1 muscle. 



Frontal ... 2 . 12 . 4 pairs. 



Temporal ... 5 5 14 muscles. 



Sphenoid . . . 12 . 12 . 12 pairs. 



Ethmoid ... 3 . 13 none. 



Nasal .... 1 . 4 . none. 

 Superior maxillary .6.9. 9 muscles. 



Lachrymal ... 1 . 4 . 1 ib. 



Malar .... 1 4 6 ib. 



Palate .... 1 . 6 4 ib. 



Inferior turbinated . 1.4. none. 



Vomer .... 1 . 6 . none. 



Lower jaw ... 2 2 14 pairs. 



* Called also posterior mental foramen. G. 



