LESSON 67.] 



MUSCULAR FIBRE. 



227 



852. 



are called, in contradistinction to the non-striped muscle, or muscle 

 of vegetative or organic life, 

 are, of all the tissues except the 

 skin, most abundantly supplied 

 with nerves. These, like the 

 blood-vessels, lie on the out- 

 side of the myolemma of the 

 several fibres ; and their influ- 

 ence must consequently be ex- 

 cited through it. 



The general arrangement 

 of the nerves is shown in Fig. 

 352. 



1004. The ultimate fibres 

 or tubes of the nerves, after is- 

 suing from the trunks, form a 

 series of loops, which return 

 either to the trunk from whence 

 they proceeded, or to an adja- 

 cent one. 



1005. Having described the 



general Structure of the Striped Distribution of nerves to muscle. 



muscle, it only now remains to give its minute and ultimate characters. 



* 1006. Obtain by tearing out the tissue an ul- FIG. 354. 

 timate fibril, or tear a fibre longitudinally, so that it 



FIG. 353. 



Muscle torn to show fibrillae. Ultimate fibrilla of mus- 



cular fibre, Pig. 



is held together only by a series of fibrillge, such as represented in 

 Fig. 353. 



1007. Place it under the microscope, using for this purpose not less 

 than a fourth object-glass or a linear power of about 500 diameters. 



1008. An appearance such as is shown in Fig. 354 will be seen. 



