THE PERIPHERAL NERVE-ENDINGS. 89 



Ley dig' s Corpuscles : Skin of amphibians and reptiles. 

 Genital Corpuscles : Clitoris, penis, etc., of man, etc. 

 Articular Corpuscles : Phalangeal joints of man, etc. 

 Tactile End-Bulbs : Skin of bill, lip, etc., of birds. 

 Meissner s Corpuscles : Cutis of hands, toes, etc., of man. 



End-Bulbs. 



( Cylindrical. ) 



Cylindrical End-Bulbs : Conjunctiva and mucous membranes of 

 mammals. 



End- Capsules : Buccal glands of hedgehog ; tongue of elephant. 

 Herbs? s Corpuscles : Skin and mucous membranes of birds. 

 Key-Retzius Corpuscles : Skin of bill of birds. 

 Vater s Corpuscles : Cutis and many other situations in man and 

 mammals. 



*. 



NERVE-ENDINGS IN MUSCLE AND OTHER ORGANS. 



Non-Striated Muscle. The sympathetic nerves supplying this 

 tissue are composed of bundles of non-medullated nucleated fibres, 

 and are enveloped by a thin perineurium ; these fibres are associated 

 as small bundles and unite to form the ground- plexus, in the nodal 

 points of which ganglion-cells usually occur. From this net-work 



FIG. 109. 



J 



Nerves of involuntary muscle from the plexus of Auerbach of intestine of 

 dog ; gold preparation : g , nodal points of plexus containing ganglion-cells ; n, 

 bundles of non-medullated nerve-fibres ; from these the small branches (/) extend 

 which give off the fibres directly supplying the muscular tissue. 



small branches are given off, which join to niake up the intermediate 

 plexus ; fine bundles of intramuscular fibrillse further extend 

 directly to the contractile tissue. The fibrillae pass between the 



