Anterior
Dorsal aorta
Dorsal respiratory
cardinal v.
arteries and veins
1
I
I
I
I
\
arteries and veins
Ventral aorta
a.
m
Fig. 1. Schematic drawing of the mouth respiratory organ and its vascular connections with the heart and
central circulation in the electric eel. The arrows indicate the direction of the blood flow. From Johansen et al.
(1968). A, Atrium; B, bulbusarteriosus; V, ventricle; a, artery; v, vein.