230 MUSCULAR SYSTEM. 



Q. Does cellular substance abound in these muscles? 



j2. Not at all; very little is found; hence it is that drop- 

 sies are not met with in this tissue. 



Q. Are blood-vessels numerous here ? 



*#. Yes; blood is found in full proportion in this tissue. 



Q. Whence do they derive their nerves? 



/?. From the cerebral and ganglionic system. 



Q. In what organ of this tissue do the cerebral nerves 

 predominate? 



A. In the stomach the par vagum. 



Properties of the Muscular System of Organic Life. 

 1. Properties of Texture. 



Q. For what properties are the organic muscles re- 

 markable? 



/?. Especially for those of texture, viz. extensibility 

 and contractility. 



Q. What is conspicuous in the extensibility of these 

 muscles? 



/?. The rapidity with which it acts, and the extent of 

 which it is susceptible. Observe this in the distention of 

 the stomach and bladder. 



Q. Why are the muscles of animal life incapable of this 

 rapid and great extensibility? 



fl. Perhaps because they are intersected by numerous 

 aponeuroses, and because the layers of their fibres are 

 very thick. 



Q. Do you not find in some of the organic muscles an 

 extensibility of a peculiar kind? 



