(A)Blood from the pulmonary artery and vena cava flows into the left and right ventricles, respectively
(B)Blood from the pulmonary vein and vena cava flows into left and right ventricles, respectivelyCorrect
(C)Blood from the pulmonary vein and vena cava flows into left and right atrium, respectively
(D)Oxygen from the pulmonary vein and vena cava flows into left and right atrium, respectively
Answer: (B)
Solution
The bicuspid (mitral) and tricuspid valves open during atrial systole to let the oxygenated blood received from the pulmonary vein (into the left atrium) and
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