Which of the Following Does Not Characterize the Circulatory Systems

question 116

Multiple Choice

Which of the following does not characterize the circulatory systems of birds and mammals?

• A) There are more blood vessels in the systemic circuit than in the pulmonary circuit.
• B) The pulmonary and systemic circuits are entirely separate.
• C) Higher pressures are required in the pulmonary circuit relative to the systemic circuit.
• D) There is no mixing of blood high in oxygen with blood low in oxygen.
• E) The systemic circuit always receives blood with the highest oxygen content.

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