io6 



A MANUAL OF ANATOMY 



it articulates with part of the malar process of the superior maxilla. 

 The anterior or infra-orbital process is slender and pointed. Its 

 direction is forwards, and it articulates with the superior maxilla 

 near the infra-orbital foramen. 



The borders are four in number — temporal, masseteric, maxillary, 

 and orbital. The temporal border extends from the frontal process 

 to the zygomatic, and is directed backwards. It is sinuous, and 

 continuous with the upper border of the zygoma, and it gives 

 attachment to the temporal fascia. Near the frontal process 

 it usually presents a slight prominence, called the marginal 

 process, to which a stout slip of the temporal fascia is attached. 

 The masseteric border extends from the zygomatic process to the 

 maxillary process, and looks downwards. It is thick, rough, and 

 continuous with the lower border of the zygoma, and it gives origin 



Frontal Process 



I Orbital Surface of Orbital Process 



Opening of Temporal Canal 

 Opening of Malar Canal 



Zygomatic Process 



Temporo-Zygoniatic Surface 

 Malar Tubercle 

 Infra-orbital Process For Sup. Maxilla 



Fig. 64. — The Right Malar Bone (Internal View). 



to the anterior fibres of the superficial part of the masseter. The 

 maxillary border extends from the maxillary process to the infra- 

 orbital process, and it looks forwards and slightly downwards. It 

 is rough and slightly concave, and, together with the rough, shghtly 

 serrated, triangular area on the internal surface adjacent to it, 

 articulates with the malar process of the superior maxilla. The 

 orbital border extends from the infra-orbital process to the frontal, 

 and is smooth, round, and concave. Its direction is outwards and 

 upwards, and it forms a large part of the circumference of the orbit. 



The bone derives its blood-supply froni the lachrymal, anterior 

 deep temporal, and transverse facial arteries. 



Articulations.— The malar articulates with four bones, as follows: 

 superiorly with the frontal and sphenoid, posteriorly with the tem- 

 poral, and anteriorly with the superior maxilla. 



Structure. — The bone is mainly composed of compact tissue, the 

 amount of cancellated tissue being small. 



