a
it passes twice through the heart in a complete circuit
b
it moves in both arteries and veins
c
it circulates in both the heart and other organs
d
the heart contains auricles and ventricles
Explanation
Correct Option
aVideo Explanation
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Countless
2 years ago
i think all animals with heart have arteris and veins, they also circulate through out the body, and even single chambered and partialy devided heart have auricles and ventricles. a mammalian heart is said to be double because it is devided two chambers almost completely devided and in a way that blood passes through each chamber before a complete circulation is done
