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Circulatory Pathways: Human Circulatory System, Cardiac Cycle, ECG, Class 11 Biology NCERT Solutions

1. There will be total 20  MCQ in this test.
2. Please keep a pen and paper ready for rough work but keep your books away.
3. The test will consist of only objective type multiple choice questions requiring students to mouse-click their correct choice of the options against the related question number.
4. No negative marking for incorrect choice.
5. Please click on “Finish the Test” when you want to exit.
6. All the best – Happy Studying.

1. The valve situated between the left atrium and the left ventricle is called
(1) Bicuspid valve (2) Tricuspid valve (3) Mitral valve (4) Eustachian tube
 
 
 
 

Question 1 of 20

2. Artery is a blood vessel which carries blood
 
 
 
 

Question 2 of 20

3. The SA node is located in
 
 
 
 

Question 3 of 20

4. The left atrium receives oxygenated blood through
 
 
 
 

Question 4 of 20

5. In human beings, the duration of the cardiac cycle is
 
 
 
 

Question 5 of 20

6. Blood enters the heart because muscles of the
 
 
 
 

Question 6 of 20

7. The maximum surface area of the circulatory system is seen in
 
 
 
 

Question 7 of 20

8. In ECG, the depolarisation of atria is indicated by
 
 
 
 

Question 8 of 20

9. ‘Dup’ sound is produced during the closure of
 
 
 
 

Question 9 of 20

10. In adult man, normal blood pressure is
 
 
 
 

Question 10 of 20

11. The opening of the right atrium into the right ventricle of the human heart is guarded by
 
 
 
 

Question 11 of 20

12. Pacemaker is
 
 
 
 

Question 12 of 20

13. Cockroach and other insects have blood which
 
 
 
 

Question 13 of 20

14. For the blood to flow from the right ventricle to the left ventricle in the mammalian heart, it must flow through
 
 
 
 

Question 14 of 20

15. Red cell count is carried out by
 
 
 
 

Question 15 of 20

16. Bundle of His is formed of
 
 
 
 

Question 16 of 20

17. Which of the following has a closed circulatory system?
 
 
 
 

Question 17 of 20

18.

P-wave of ECG indicates:

(1) Depolarisation of atrial muscles

(2) Activation of the SA node

(3) Spread of excitation from the SA node to the V node

(4) Repolarisation of atria and depolarisation of ventricle

 
 
 
 

Question 18 of 20

19. Heart beat initiates from
 
 
 
 

Question 19 of 20

20. A closed circulatory system occurs in
 
 
 
 

Question 20 of 20