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

question 21

Multiple Choice

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

• A)a four-chambered heart.
• B)a single circuit.
• C)partially-separate circuits for gas exchange and systemic delivery of blood.
• D)a pocket of the gut that serves as an air bladder.
• E)complete separation between oxygenated and deoxygenated blood.

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