VENOUS SYSTEM 



327 



A 



-Vsbc 



FIG. 267. DIAGRAM OF THE VENOUS SYSTEM OF Protopterus annectens. 

 (After W. N. Parker.) 



;, ventricle ; at, atrium ; p, pericardium ; ca, conus arteriosus ; Ji, Je, internal 

 and external jugular ; Vsbc, subclavian ; DC, DC', precaval veins ; Cp, post- 

 caval ; Vh, Vh, hepatic veins ; L, liver; G.B, gall-bladder ; G.G, bile-duct ; 

 M, "stomach"; Da, intestine; L.G, lymphoid organ in the walls of the 

 stomach, the blood from which passes into the hepatic portal veins (Vpo, 



po; 



is connected by anastomoses (ans) with the postcaval (Cp) in the region of 



the kidneys, 



