Cardiac Conduction System (SA, AV Nodes) Practice Questions
20 free Cardiac Conduction System (SA, AV Nodes) practice questions for the NCERT Biology, each with the correct answer and a detailed explanation. Open any question below, or take the full set as an interactive quiz.
Questions
20 questions
All Cardiac Conduction System (SA, AV Nodes) questions
- Q1. Which structure acts as the primary pacemaker of the human heart?
- Q2. The SA node is located in which part of the heart?
- Q3. Which node receives impulses from the SA node and delays them before ventricular contraction?
- Q4. The main functional significance of AV nodal delay is to:
- Q5. Which part of the conduction system connects the AV node to ventricular myocardium?
- Q6. Purkinje fibers primarily function to:
- Q7. If the SA node fails, which structure can take over as pacemaker at a slower rate?
- Q8. The intrinsic rhythmicity of the heart is due to:
- Q9. Which cardiac tissue has the highest rate of spontaneous depolarization?
- Q10. The AV node is located at the junction of:
- Q11. Which structure ensures that impulses reach the apex of the heart first?
- Q12. Bundle branches are located in the:
- Q13. Which event occurs first in the normal cardiac conduction sequence?
- Q14. Damage to the AV node would most directly affect:
- Q15. Which structure prevents simultaneous contraction of atria and ventricles?
- Q16. The rate of impulse generation in the SA node is normally about:
- Q17. Which ion plays a major role in spontaneous depolarization of SA node cells?
- Q18. The conducting fibers with the fastest impulse transmission speed are:
- Q19. Which statement correctly describes cardiac conduction?
- Q20. Complete heart block is most likely due to failure of conduction at the: