MUSCLE TISSUE 



ii: 



intercellular fibrils are described as continuous from cell to cell, thus 

 forming a syncytium. Between and surrounding the smooth muscle 

 cells is a network of delicate connective-tissue fibrils' (Fig. 57). 



^^"^■> 



T^in 



r-^i-. 







'^^*»i?>, 



n- 





Fig. 57. — Longitudinal Section of the Musculature of Cat's Intestine to show 

 Intercellular Connective Tissue. (Bohemann.) 



These are not apparent in sections which have been subjected to the 

 usual technic, but can be demonstrated either by digesting the smooth 

 muscle cells by means of trypsin, thus bringing out the undigestible 

 collagenous fibrils, or by special staining methods. 



{Xr-'<1VJAA' V'^\i^\ hill ir-- 



Kinr7^r-v^--':"^iH^ 



j^ IViL. 



yfJL:.../ ' ■ 



Fig. 58. — Elastic Fibres in the Smooth Muscle of Intestine of Cat. (Holmgren.) 



if Smooth muscle cells may be arranged in layers of considerable 

 thickness, the cells having a definite direction, as in the so-called 

 "musculature" of the intestine (Figs. 58 and 59). In such masses 



