248 



Branchial artery 



VERTEBRATA: PISCES OR FISHES. 



FIG. 288. 



Branchial or gill vessels. 



Arterial bulb 



Ventricle of the heart. . 

 Auricle of the heart 



Venous sinus 



Vena portse, liver, etc - 



Intestine 



Vena cava 



Dorsal artery. 



Kidneys. 



Dorsal artery or aorta. 



Another view of the Circulatory apparatus of a Fish. 



spending to the right auricle and right ventricle of warm- 

 blooded vertebrates; and the blood passes only once through 

 the heart instead of twice, as in Birds and Mammals. 



The auricle receives only the venous blood returned to it from all 

 parts of the body. From the auricle this blood passes into the ventri- 

 cle ; from the latter cavity it passes to the gills through a single artery 



