What statement regarding contraction of the heart is true?
A) The two ventricles contract simultaneously, moving blood into the atria.
B) The right atria and ventricle contract together, moving blood to the left side.
C) Both atria contract together just before both ventricles contract.
D) The left ventricle contracts, thus moving blood into the lungs for oxygenation.
Correct Answer:
Verified
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