144 STUDIES IN ELECTRO-PHYSIOLOGY: 



CHAPTER XI 



THE ELECTRO-PHYSIOLOGY OF THE 

 MOTOR APPARATUS 



MUSCULAR TISSUE. 

 THE two chief varieties of muscular tissue are 



(1) Unstriped or involuntary muscle, i.e., not under 



the control of the will. 



(2) Striped or voluntary. 



In non-striated muscular tissue the cell substance is 

 longitudinally but is said to be not transversely striated, and 

 each cell seems to have a delicate sheath. Between the 

 fibres there is a small quantity of cementing substance. 

 Non-medullated nerves are supplied to plain muscular 

 tissue from the sympathetic or ganglionic system, and this 

 tissue responds but slowly to a stimulus ; the contraction 

 spreading as a wave from fibre to fibre. 



As it may help us to a clearer understanding of the 

 functioning of the motor apparatus as a whole, we will first 

 consider striated tissue. 



STRIATED MUSCULAR TISSUE. 



Up to this moment I had not seen, in any work upon 

 Physiology, any illustration of the structure of muscular 

 tissue, but as an electrician I knew what I should find when 

 I betook myself to study. I should find sets of con- 

 densers of varying capacity, with an elastic (compressible) 

 substance between each condenser, and with absolute, 



