THE MUSCULAR SYSTEM. 



MUSCLES. 



We have studied the framework or skeleton of the 

 body. We have seen from the figure of it in the 

 Anatomical Aid, how it resembles the framework of 

 a house before it is weather-boarded and shingled. 

 The plate of the body which is now before us pre- 

 sents altogether a different view from that which we 

 have been studying. We notice that it looks more 

 like the full body, more like a house that is enclosed. 

 The bones are here quite concealed by another 

 division of organs the muscular system. The 

 word system in Physiology means the whole collec- 

 tion of parts or organs of the body, which perform 

 similar work or which work together for some com- 

 mon purpose. We are already acquainted with the 

 bony system. We will now study the muscular 

 system. 



The muscles form the lean flesh of the 

 body. The meat which we eat for food 



31 uscles. * 



is chiefly muscle. We are all familiar 

 with the dark red color of beef when it is 



(19) 



