66 



PSYCHOBIOLOGY 



which appears to be composed of nucleated protoplasm, within which the 

 dendrite branches more or less complexly, and terminates. 



Fig. 54. A tendinous terminal organ ('organ of Golgi'), on the 'tendon of 

 Achilles'. Magnified. (Barker, Nervous System, after Ciaccio.) 



Tactile corpuscles (Meissner's corpuscles) and end bulbs (end bulbs 

 of Krause, genital corpuscles, etc.) resemble enlargements of the fiber, 

 cylindrical or spheroidal in the end bulbs, and ellipsoidal in the tactile cor- 

 puscles. The core contains several nucleated cells. The nerve fiber may 

 wrap around the tactile corpuscle several times before entering it. 



"Jte« 



Fig. 55. Middle third of a ' terminal placque ' in a muscle spindle of a cat. 

 Highly magnified. (Barker, Nervous System, after Rufnni.) At N are seen three 

 nerve fibers, whose branches compose the rings (A), spirals (S), and branched pro- 

 cesses (E) making up the ' placque '. Three muscle fibers are shown, enclosed in 

 the sheath C, C. 



