122 



THE TISSUES 



and mastication. In some of the lower animals are found muscles 

 made up wholly of red fibres. 



INIuscle fibres ending within the substance of a muscle have 

 pointed extremities. Where muscle fibres join tendon, the fibre ends 



f z — ^s 



]i 



Jd 



■H""iiBI» i"!4" fHiii" 



# 9# # • 



I Qh 



} Qh 

 I 



P 1 i|" " I 



H H g g g g 



Telophragma 



J-granules 



Q -granules 



Mesophragma 



Q-granules 



J-granules 



J-granules 



Cross-fibre 

 nets 



dililK 



Cross-fibre 

 nest 



L 7, — iitt iii iMJ w ii fe^ i tiW^'^ 



Fig. 64. — Scheme of Structure of Striated Voluntary Muscle Fibre with Nomenclature 



of Heidenhain. (llcidcnhain.) 



in a rounded or blunt extremity, the sarcolemma being continuous 

 with the tendon fibres (Figs. 65 and 66). 



Muscle fibres are usually unbranched. In some muscles — e.g., 

 those of the tongue and of the eye — anastomosing branches occur. 



