266 



MUSCLE-TISSUE. 



The distribution of the muscle-fibers in the belly of a muscle 

 is best observed in transverse sections, with lower powers of the 

 microscope. (See Fig. 111.) 



Each fiber is surrounded, and a certain number of them are 

 inclosed, by fibrous connective tissue, the former being termed 



FIG. 110. BUNDLES OF SMOOTH MUSCLE OF THE HUMAN UTERUS, 

 SHORTLY AFTER DELIVERY. CHROMIC ACID SPECIMEN. 



L, longitudinal, O, oblique, T, transverse section of bundles : P, perimysium, containing 

 blood-vessels, C ; JK, plastids in the connective tissue, probably the first trace of muscle-fibers. 

 Magnified 500 diameters. 



internal perimysium, the latter, external perimysium. The con- 

 nective tissue is the exclusive carrier of blood- and lymph-ves- 

 sels, also of the nerves, and often contains fat- globules. The 



