THE Ca:LIAC ARTERY IN THE RAlJUiT V7 



figure 8:6 and 8 the three or more origins of the left gastric are scat- 

 tered over a comparatively long area. Probably the most interesting 

 hepatic arterial variation is that shown in hgure 8:7 where a second 

 hepatic artery (HE) comes otT the right branch of the left gastric 

 artery. 



The variations in the gastrodiiodcnal artery have already been 

 mentioned. It may come olT the cceliac in common with the hepatic 

 ( ligure 8:8) and a part or all of the left gastric, or it may branch 

 otT the hepatic some distance beyond the left gastric, which is the 

 normal condition. The range of variations here is quite consider- 

 able. 



The right gastric artery may have its origin on the hepatic, the 

 latter being normal or abnormal, or it may, as is shown in figure 

 8:4, 5, 7 and 8, come off the gastroduodenal. 



FREQUENCY OF VARIATIONS 



If the branches of the cceliac artery and their ramifications in 

 different rabbits were compared with any considerable degree of de- 

 tail, each particular case, no doubt, would stand by itself. But with 

 the details as shown in figures 3 to 8 as the criterion for the degree 

 of minutia, it will be interesting to compare the branches as a whole 

 and note the frequency of such variations. 



The following table of twenty-five rabbits will show that the 



total number of variations is greater (68 per cent) than the normal 



condition, which is only 32 per cent. The frequency of the next 



most numerous is 24 per cent. If we consider that the modifications 



listed under 2 and 3 in the table, especially 2, in which case the 



right gastric artery comes off the hepatic and which is the normal 



condition, we find that the total frequency of case 1 in the table 



and the modifications of 2 and 3 (2, a and 3, a) is 68 per cent of the 



total. 



TABLE SHOWING THE FREQUENCY OF VARIATIONS 



Percentage Percentage 

 Number Normal Abnormal 



1. Rabbits showing (normal) condition, as 



Fig. 3 8 32 



2. Rabbits showing condition, as Fig. 4 1 4 



(a) As Fig. 4 except right gastric comes 



off the hepatic 3 12 



3. Rabbits showing condition, as Fig. 5 1 4 



(a) As Fig. 5 except right gastric comes 



off the hepatic _ 6 24 



4. Rabbits showing condition, as Fig. 6 4 16 



5. Rabbits showing condition, as Fig. 7 1 4 



6. Rabbits showing condition, as Fig. 8 1 4 



Total 25 32 68 



7 



