460 



THE HUMAN BODY 



lobules, and there communicate with a network of extremely 

 minute commencing bile-capillaries, ramifying in the lobule be- 

 tween the hepatic cells composing it. The relation of the bile- 

 capillaries to the blood-capillaries within the lobule is such that 

 there is always a liver-cell interposed between them. 

 This arrangement is illustrated diagrammatically in Fig. 134. 



From the arrangement of 

 blood-capillaries and bile- 

 capillaries with their con- 

 nections we can picture the 

 movement of blood and bile 

 through the lobules; the 

 blood, both from the portal 

 vein and the hepatic artery, 

 is delivered to the lobule 

 at its periphery and flows 

 thence from all sides toward 

 the center, where it enters 

 the interlobular vein and is 

 conveyed away. The bile, 

 on the other hand, is se- 

 creted by the liver-cells 

 and from them passed into 

 the bile-capillaries; it flows 

 along these toward the per- 

 iphery where it enters small 

 bile-ducts, and so is carried 

 toward the great outlet of 



FIG. 136. Diagram of abdominal part of al- +u o-lanrl +hp hpnafip Hunt 

 imentary canal. C, the cardiac, and P, the ttie S lana > tJ 

 pyloric end of the stomach, A; D, the duode- The Pancreas Or Sweet- 

 num; J, I, the convolutions of the small intes- . . 



tine; CC, the caecum with the vermiform ap- bread. This IS an elon- 

 pendix; AC, ascending, TC, transverse, and , i ^4?4. ^e 



DC, descending colon; 8F, sigmoid flexure; gated soft Organ of a pmk- 



R, the rectum. ish-yellow color, lying along 



the great curvature of the stomach. Its right end is the larger, 

 and is embraced by the duodenum (Fig. 135), which there makes 

 a curve to the left. A duct traverses the gland and joins the com- 

 mon bile-duct close to its intestinal opening. The pancreas pro- 

 duces a watery-looking secretion which is of great importance 

 in digestion; the gland also secretes a hormone which exerts an 



