J 5* 



MUSCULAR SYSTEM. 



[sect. 84. 



connective tissue surrounding them. In thicker tendons, small 

 solitary vessels are also found in the superficial layers ; and in the 

 thickest tendons, sparing vascular networks can be demonstrated 

 by the microscope and injections also in the deeper layers; still 

 even here, the deepest layers are completely destitute of vessels. 

 The above arrangement obtains also in the ligaments of the 

 tendons, except that still fewer vessels can be demonstrated in 

 them. The thinner fasciae are altogether devoid of vessels ; the 

 thicker, as the fascia lata, apart from the very vascular loose 

 areolar tissue covering their surfaces, contain a few ramifications. 

 On the other hand, the synovial membranes of the muscular 

 system are rich in vessels, especially their vascular processes. 



B. The Lymphatic Vessels of the muscles are but few in number ; 

 and I find, 1, in small muscles, as, for example, in the omo-hyoideus 

 and subcruralis, no lymphatic vessels; and, 2, in the largest 

 sized muscles, but only in some of them, lymphatic vessels of 



3 



to £'" accompanying the blood-vessels. Now, since the deep 



Fig. 70. 



Terminal expansion of the nerves from a human 

 omo-hyoideus, magnified 350 times, and treated 

 with caustic soda. a. Meshes of the terminal 

 plexus, b. Terminal loops, c. Muscular fasciculi. 



or muscular blood-vessels of 

 the extremities are accom- 

 panied with but few lymphatic 

 vessels, which certainly do not 

 all come from the muscles, it 

 appears quite justifiable to 

 assume, that the few lympha- 

 tics > which really occur in the 

 larger muscles, do not pene- 

 trate between the secondary 

 fasciculi, but are confined to 

 the more vascular perimysium 

 between the larger and more 

 loosely connected divisions, 

 particularly where it is inter- 

 mingled with fat, and, there- 

 fore, soft ; as in the gluteus, 

 and in the superficial layers of 

 many other muscles. 



No one has yet seen lym- 

 phatics in the tendons, fascise 

 and synovial membranes of 

 the muscular system. 



§ 84. Nerves of Muscles. — The distribution of the muscular 



