Which of the following is true of the contraction of the heart?

A) The muscle obtains the beat from the pacemaker region exclusively.
B) The ventricles contract first, followed by the atria.
C) Cardiac contractions are coordinated by specialized conductive cardiac muscle fibers.
D) The contractions do not occur in any specific repeatable sequence each time.
E) None of the answers are correct.


C) Cardiac contractions are coordinated by specialized conductive cardiac muscle fibers.

Anatomy & Physiology

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