134 



PERIPHERAL NERVE TERMINATIONS 



NERVE ENDINGS IN MUSCLE AND TENDON 

 A. Striated Muscle 



I. MOTOR END PLATES. These organs form the intramus- 

 cular endings of peripheral motor neurones whose cell bodies are 

 found in the ventral horns of the grey matter of the spinal cord. 

 They reach the muscle through the many cerebro-spinal nerve 

 trunks. On entering the muscle these nerves form a plexus in 



__ a 



FIG. 134. MOTOR NERVE ENDINGS IN STRIATED MUSCLE. 



A, from a lizard ; B, from the guinea-pig ; (7, from the hedgehog. A and C are sur- 

 face views ; in B the end plate is seen in profile, a, muscle fibre ; 6, nerve fibre ; c, nerve 

 ending in the form of a " brush " ; d, the sole plate ; e, sarcolemma. A, x 160 ; B, x 700 ; 

 C, x 1200. (After Bohm and von Davidoff.) 



the perimysium from which nerve fibres are distributed within 

 the muscle bundles. Here they form an abundant plexus of 

 branching nerve fibres within the endomysium, the ultimate 

 branches being of sufficient number to supply one or more termi- 

 nal nerve fibres to each muscle cell, 



