GLOSSARY. 185 



Opacity. The faculty of obstructing the passage of light 

 Ophthalmic. Belonging to the eye. 



Orbit. The two cavities in which the eyes are lodged are thus named. 

 Os. A bone. 



Potato. Names compounded of this word belong to muscles which are 



attached to the palate. 

 Papilla. Small eminences, as of the tongue. The teats are so named. 

 Par Vagum. The eighth pair of nerves. 

 Parenchyma. The tissues. 

 Pectoral. Of or belonging to the chest 

 Periosteum. The membrane that invests the bones. 

 Pharyngeal. Relating to the pharynx. 

 Pharynx. A muscular cavity at the back of the mouth. 

 Phosphate. A salt formed by the union of phosphoric acid and a saline 



base ; hence phosphate of lime. 

 Phrenic. Belonging to the diaphragm. 

 Pisiform. Pea-like. A bone of the knee of the horse, and the wrist of 



man. 

 Process. An eminence of a bone. 



R 



Rectus. Straight. Several muscles are so called. 



Recurrent, (so named from reflection.) Reflected. 



Region. A part of the body. 



Renal. Belonging to the kidney. 



Reticular. Interwoven, like a net. 



Retractor. A muscle, the office of which is to retract a part 



Rotator. A muscle, the office of which is to turn a limb. 



s 



Sacral. Of or belonging to the sacrum. 



Scaphoid. One of the bones of the knee. 



Semen. The seed, or prolific liquor of animals, secreted in the testicles, 



Semilunar. Half-moon shape. 



Septum. A partition. 



Serratus. So called from the saw-like appearance. 



Sinus. A cavity, or depression. 



Spermatic. Belonging to the testicle. 



Spinal. Belonging to the spine, or back. 



