If the SA node is damaged,nodal rhythm is sufficient to sustain life.
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Q4: The systemic circuit contains oxygen-rich blood only.
Q5: The fibrous skeleton of the heart serves
Q6: Ventricular pressure increases the fastest during ventricular
Q7: Papillary muscles prevent the AV valves from
Q8: The cardiac plexus and cardiac nerves dominate
Q10: Endurance athletes commonly have a resting heart
Q11: The pulmonary circuit is supplied by both
Q12: Repolarization of a ventricular cardiomyocyte takes longer
Q13: Exercise causes the ventricles to hypertrophy.
Q14: Atrial hypertrophy would probably cause an enlarged
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