Which of the following is true of the contraction of the heart
A) The ventricles contract first, followed by the atria.
B) The contractions do not occur in any specific repeatable sequence each time.
C) Cardiac contractions are coordinated by specialized conductive cardiac muscle fibers.
D) The muscle obtains the beat from the pacemaker region exclusively.
E) None of the answers are correct.
Correct Answer:
Verified
Q43: Which of the following is a major
Q44: During one cardiac cycle the ventricles spend
Q45: If a small blood clot passes through
Q46: During their period of systole, the inner
Q47: The coronary artery found under the right
Q49: During most of ventricular diastole, the
A)atria are
Q50: Which of the following is supplied with
Q51: Nodal activity of the heart may be
Q52: At rest the heart rate is usually
Q53: In terms of time, at rest one
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