As Compared with the Circulatory System of Most Fishes, the Circulatory

Multiple Choice

As compared with the circulatory system of most fishes, the circulatory system of adult amphibians has the advantage of

A) a four-chambered heart.
B) two aortas.
C) a partial separation between pulmonary and systemic circulation.
D) a pocket of the gut that serves as an air bladder.
E) complete separation of oxygenated and deoxygenated blood.