MUSCULAR COAT OF THE STOMACH. 



833 



fibres. These oblique fibres are continuous with the layer of circular fibres 

 of the gullet ; they embrace the cardiac orifice on the left, where they form 

 a considerable stratum, and from that point descend obliquely upon the 



Fig. 580*. SKETCH 

 OF THE DISTRI- 

 BUTION OP MUS- 

 CULAR FIBRES IN 

 THE STOMACH (af- 

 ter Pettigrew and 

 from nature). - g 



A, external layer 

 of longitudinal fi- 

 bres, as seen from 

 the outside ; B, 

 middle layer of cir- 

 cular fibres as seen 

 on removing the 

 longitudinal layer ; 

 C, deepest layer of 

 oblique fibres as 

 seen from within, 

 after inverting the 

 stomach and remov- 

 ing the mucous 

 membrane : c, the 

 cardiac end ; p, the 

 pyloric end ; in A, 

 the stronger longi- 

 tudinal fibres pass- 

 ing along the lesser 

 and greater curva- 

 tures, and all round 

 the pyloric end, are 

 shown, and the radi- 

 ating fibres spread- 

 ing from the root of 

 the gullet over the 

 front and back of the 

 stomach ; in B,- the 

 nearly uniform layer 

 of circular fibres in 

 two sets crossing each 

 other very obliquely, 

 and becoming con- 

 centric at the car- 

 diac end to the cen- 

 tre of the great cul- 

 de-sac ; in C, the 

 very oblique bands 

 of fibres which form 

 a continuation of the 

 circular fibres of the 

 gullet and spread in 

 two sets, o, o', one 

 from the right and 

 the other from the 

 left side of the car- 

 dia (also partially re- 

 presented in B), pass- 

 ing over the front and 

 back of the stomach 

 (exceptits lessercur- 

 vature) as far as the pyloric end. 



Fig. 580*. 



3 i 



