Multiple Choice
Which of the following concerning the heartbeat is true?
A) Only the ventricles contract in unison.
B) Only the atria contract in unison.
C) The atria contract together in unison, and the ventricles contract in unison.
D) Only the atrium and ventricle on the right side of the heart contract in unison.
E) Only the atrium and ventricle on the left side of the heart contract in unison.
Correct Answer:
Verified
Correct Answer:
Verified
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