116 



MUSCULAR TISSUE. 



the muscular fibres terminate in rounded ends, "whicli are received 

 into corresponding depressions of the tendinous structure, to which they 

 cling ; the connective tissue of the one being continuous with that of 

 the other (fig. 74 A). 



Fig. 74. 



'A -/ 



Fig. 74. — Ending of Muscle in Tendon (Kolliker). 



A, Oblique connection, from tlie gastrocnemius muscle, 250 

 diameters, h, muscular fibres with rounded ends, united by inter- 

 stitial connective tissue ; c to a, part of tlie tendon. 



B, Direct continuity of muscular substance, a, into tendinous 

 tissue, h, from an intercostal muscle. 350 diameters. 



In this oblique mode of attachment, according- to Weis- 

 mann and du Bois-EejTnond, the ends of the muscular fijjres 

 are, in some cases at least, not rounded and covered by sarco- 

 lemma, but terminate abruj^tly as if cut across ; being, as it 

 •were, cemented to the tendon. In surface view the ends ^^ _ 



present a facetted appearance. Ellis, in oj^position to Kolliker, El.^^."^ 



describes the connection of striated muscle with tendon as 

 taking place in the following manner : — AVlien a muscular 

 fibre is about to end in a tendon, its component fibrils are 

 collected into bundles of different lengths and sizes like the 

 roots of a tree. Ai'ound each bundle tendinous tissue is 

 collected, foi-ming a sheath M'hich appears gradually to cease as it is continued 

 backw^ards on the imdivided fibre. The muscular fibrils of a bundle in approach- 

 ing the tendon gTadually cease, each having probably it« own tendinous thread 

 to fix it. He states that, where the attachment is oblique, as in the gastrocnemius 

 and soleus, every fibre is provided with its separate tendon and is continuous with 

 it as above described, and that the increasing thickness of the main tendon 

 from above downwards is due to successive additions, in the form of strata, 

 of the contributing tendons from the lower placed layers of muscular fibres. 



In attaching themselves to the skin and mucous membranes, the muscular 

 fibres divide into pointed processes or fine filaments which are continuous with, 

 those of the connective tissue (Hyde Salter). 



Blood-vessels. — The blood-vessels of the muscular tissue arc ex- 

 tremely abundant, so that, when they are successfully filled with 

 coloured injection, the fleshy part of the muscle contrasts strongly 

 with its tendons. The arteries, accompanied by their associate veins^ 

 enter the muscle at various points, and divide into branches : these 

 pass among the fasciculi, crossing over them, and dividing more and 

 more as they get between the finer divisions of the muscle ; at lengthy 



