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Body Fluids and Circulation

Human Heart: Structure and Working Practice Questions

20 free Human Heart: Structure and Working 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.

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All Human Heart: Structure and Working questions

20 questions
  1. Q1. The double-walled membranous bag that encloses the heart and contains a fluid to reduce friction is called:
  2. Q2. Which of the following valves prevents the backflow of blood from the right ventricle into the right atrium?
  3. Q3. The 'Pacemaker' of the human heart is located in which chamber?
  4. Q4. Which nodal tissue is responsible for receiving impulses from the SAN and delaying them slightly before passing them to the ventricles?
  5. Q5. During a cardiac cycle, the volume of blood pumped out by each ventricle per minute is called:
  6. Q6. The duration of a standard cardiac cycle in a healthy human heart is approximately:
  7. Q7. Which of the following events occurs during 'Joint Diastole'?
  8. Q8. The first heart sound 'Lubb' is associated with:
  9. Q9. The thick muscular wall that separates the right and left ventricles is known as the:
  10. Q10. Which of the following represents the correct sequence of impulse conduction in the heart?
  11. Q11. In a standard ECG, the P-wave represents:
  12. Q12. A person with a heart rate of 100 beats per minute and a stroke volume of 50 mL has a cardiac output of:
  13. Q13. The hepatic portal system carries blood from the ______ to the ______ before it reaches the systemic circulation.
  14. Q14. During ventricular systole, which valves are forced open by the increasing pressure?
  15. Q15. The systemic circulation is responsible for carrying:
  16. Q16. What is the function of chordae tendineae?
  17. Q17. The QRS complex in a standard ECG indicates:
  18. Q18. A special vascular system of blood vessels present in our body exclusively for the circulation of blood to and from the cardiac musculature is:
  19. Q19. The T-wave in an ECG represents the return of the ventricles from excited to normal state. This process is called:
  20. Q20. Which chamber of the heart has the thickest muscular wall?