★ Heart Structure and Double Circulation Quiz
Select the organism with the heart as shown in the diagram.
A. Insect
B. Fish
C. Frog
D. Human
Preview next quiz:
What carries the oxygenated blood from the lungs to the left atrium of the heart?
A. vena cava
B. aorta
C. pulmonary vein
D. pulmonary artery
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