THE PERITONEUM. 



483 



denum ; behind the orifice is the vena cava ; it is bounded above by the 



Fig. 340, A.— Diagrammatic Outline op a 



SUPPOSED SECTION OF THE BODY, SHOWING 

 THE INFLECTIONS OF THE PeRITONEUJI IN 



THE Female (Allen Thomson). J 

 The upper part of the section is a little to 

 the right of the mesial jjlane of the body, 

 tlirough the quadrate and Spigelian lobes of 

 tlie liver ; below, it is supposed to be mesial: 

 I c, placed above the diaphragm opposite to 

 the coronary ligament of the liver ; I, the 

 liver ; I', lobe of Spiegel ; s, stomacli ; c, 

 transverse colon ; i, the small intestine ; 

 p a, pancreas ; a, the aorta ; d, the duode- 

 num ; V, urinary bladder ; v., uterus ; r, 

 rectiim ; r, its middle part opened ; v a, 

 vagina ; p, p, the parietal peritoneum lining 

 the front and back of the abdominal cavity ; 

 the line representing the inflections of the 

 greater sac of the peritoneum will be traced 

 from the neighbourhood of I c, where it 

 passes on the upper surface of the liver over 

 the ujiiier and lower surfaces of that organ, 

 in the front oi gh, the gastro-hepatic omen- 

 tum, over the front of the stomach, down 

 to o', the outer layer of the great omentum, 

 whence it passes back to the vicinity of 

 tlie pancreas, and re-descends as the upper 

 layer of the transverse meso-colon ; after 

 ■enclosing the colon it returns on the lower 

 surface of the transverse meso-colon, in c, to 

 the root of the mesentery, m ; it now forms 

 the mesentery and encloses the small in- 

 testine, returning to the jDosterior wall of 

 the abdomen, whence it passes over the 

 rectum, r, descends into the recto-vaginal 

 pouch, It', covers the back and front of 

 the uterus and the bladder partially, and 

 regains the anterior abdominal wall above 

 the in^bes. As connected with the lesser 

 sac of the peritoneum, w marks the posi- 

 tion of the foramen of Winslow as if seen 

 beyond the section ; the lesser sac, with 

 the cavity of the omentum, is shaded 

 with horizontal lines, and is marked o o : 

 round this space the line of the peri- 

 toneum may be traced from the diaphragm 

 over the lobe of Spiegel, to the back of the 

 gastro-hepatic omentum, thence behind the 

 stomach and down into the great omen- 

 tum ; it then ascends to the pancreas, 

 which it covers, and thence reaches again 

 the diaphragm. 



B is a sketch of part of a section similar 

 to that of A, but showing the view more 

 commonly taken, according to which the 

 two layers of the meso-colou are continuous 

 with the posterior pair of the layers of the 

 great omentum. 



Spigehan lobe where joined by 

 the lobuhis caudatus , its lower 

 boundary is formed by the duo- 



Fig. 310. 



