68 OSTEOLOGY 



the floor and outer walls of the nasal fossae and the 

 hard palate or roof of the mouth, in conjunction with 

 the palate bone, also a part of the floor of the orbit. 

 It contains the hollow space just above the canine 

 tooth, called the antrum of Highmore. The latter 

 communicates with the nasal chamber and is frequently 

 the seat of inflammation. This bone articulates with 

 its fellow of the opposite side, the nasal, lacrymal, 

 frontal, ethmoid, palate, malar, vomer, inferior tur- 

 binate, and sometimes the sphenoid. 



The Palate Bones. They are two in number situated 

 at the back part of the nasal fossae; they are lodged 

 between the maxilla and the pterygoid processes of 

 the sphenoid. Each bone assists in the formation of 

 the floor and outer wall of the nasal cavity, roof of the 

 mouth, and floor of the orbit. 



The Turbinated Bones. They are situated one on 

 each side of the outer wall of the nasal fossae. Each 

 consists of a layer of thin, spongy bone, curled upon 

 itself like a scroll hence its name, turbinated 



The Malar Bone. This bone is quadrangular, and is 

 situated at the upper and outer part of the face. It 

 forms the prominence of the cheek, part of the outer 

 wall and floor of the orbit, and part of the temporal 

 and zygomatic fossae. It articulates with the frontal, 

 sphenoid, temporal, and the maxilla. 



The Mandible or Lower Jaw. This is the largest and 

 strongest bone of the face. It consists of a horizontal 

 portion called the body, which forms the chin, and 

 two perpendicular rami, which join the body to form 

 the angle of the jaw. It articulates by its condyles 

 with the glenoid cavity of the tympanic portion of the 

 temporal bone. The horizontal portion serves for 

 the lodgement of the lower teeth. 



The Hyoid Bone. This is a bony arch, shaped like 

 a horseshoe, and consisting of five segments a body, 

 two great cornua, and two lesser cornua. It is situated 

 in the neck in the receding angle below the chin. It is 



