[Campbell Biology P.1000] Which feature is common to the circulatory systems of both amphibia... | Practice Question

Which feature is common to the circulatory systems of both amphibians and humans?

  • A: The number of heart chambers.
  • B: A complete separation of circuits for circulation.
  • C: The number of circuits for circulation.
  • D: A low blood pressure in the systemic circuit.

Explanation

Both amphibians and humans possess a double circulatory system, meaning blood passes through the heart twice during one complete circuit of the body. Amphibians have an incomplete double circulation with a three-chambered heart two atria, one ventricle , while humans have a complete double circulation with a four-chambered heart.