THE BONES. 45 



Ethmoid Bone. Situated in the anterior part of the basis of the 

 cranium, above the root of the nose and between the orbits. 



BONES OF THE FACE 



The bones of the face are fourteen in number, and are divided 

 into those of the upper and under jaw. The upper jaw is formed 

 of thirteen bones, viz. two superior maxillary, two nasal, two pala- 

 tine, two jugular or malar, two inferior spongy, two lachrymal, and 

 the vomer, which are united to the cranium, and with one another, 

 by harmony. The under jaw consists of one bone. 



Superior Maxillary Bones. Situated in the anterior and middle 

 part of the face. 



Jugular or Malar Bones. Situated at the sides of the face. 



Ossa Nasi, or Bones of the Nose. Situated in the superior and 

 middle part of the nose. 



Lachrymal Bones. Situated in the internal angle of the orbit. 



Inferior Spongy Bones. Situated in the side and lower part of 

 the nostrils. 



Palatine Bones. Situated in the posterior part of the nose, from 

 which they ascend laterally to the orbits. 



Vomer. Situated in the middle of the cavity of the nostrils, 

 which it divides into two parts. 



Lower Jaw Bone. Situated in the inferior and anterior part of 

 the face. 



Os Hyoides. Situated in the fauces, between the basis of the 

 tongue and iarnyx. 



BONES OF THE TRUNK. 



The trunk of the skeleton is divided into the spine, chest, loins, 

 and pelvis. 



Spine. A long column, or pillar, which extends in the posterior 

 part of the trunk from the occipital bone to the os sacrum. Com- 

 posed of 24 bones called vertebrae, viz. 7 of the neck, 12 of the 

 back, and 5 of the loins. 



BONES OF THE CHEST, OR THORAX. 



The thorax is composed of twelve dorsal vertebrae, twenty- four 

 ribs, and the sternum. 



Sternum. Situated in the anterior part of the thorax, between 

 the true ribs. 



