Topicwise Questions - Circulatory System

Multiple Choice Questions - Questions related to Heart and Blood

1. Which of the following are the possible blood groups of the offspring of the parents with blood group O and AB?

  1. O, A, B and AB
  2. A and B
  3. A, B and AB
  4. O and AB

2. White blood cells act

  1. as a defence against infection
  2. as source of energy
  3. for clotting blood
  4. as a medium for oxygen transport from lung to tissues

3. In which one of the following is extra blood stored and is released when shortage occurs?

  1. Adrenal gland
  2. Pancreas
  3. Spleen
  4. Thyroid gland

4. The average life span of red blood corpuscles is about

  1. 100 - 200 days
  2. 100 - 120 days
  3. 160 - 180 days
  4. 150 - 200 days

5. From which one of the following chambers of human heart is the oxygenated blood pumped into aorta?

  1. Right atrium
  2. Right ventricle
  3. Left atrium
  4. Left ventricle

6. If the radius of blood vessels of a person decreases his/her blood pressure will

  1. increase
  2. decrease
  3. remain unaffected
  4. increase for males and decrease for females

7. Insufficient blood supply in human body is referred as

  1. Ischemia
  2. Hyperemia
  3. Hemostasis
  4. Hemorrhage

8. Mineral impurities in blood are removed by

  1. Lungs
  2. Kidney
  3. Spleen
  4. Liver

9. Between which one of the following sets of blood groups, is the blood transfussion possible?

  1. A and O (A donor)
  2. B and A (B donor)
  3. A and AB (A donor)
  4. AB and O (AB donor)


10. The pH of Human Blood is ___?

  1. 7.4
  2. 7.2
  3. 7.8
  4. 6.6

11. In the human body, red blood cells are produced in

  1. liver
  2. voluntary muscles
  3. pancreas
  4. bone marrow

12. Which is the anti-coagulant substance in blood?

  1. Fibrinogen
  2. Thrombin
  3. Globin
  4. Heparin

13. What vessel carries the venous blood to the lungs for oxygenation?

  1. Pulmonary arteries
  2. Pulmonary veins
  3. Pulmonary arterio-venous shunt
  4. Right ventricle

14. When a child is born, what happens to its blood circulation?

  1. Its blood flows for the first time
  2. Its blood reverses its flow through the heart
  3. Its blood ceases to pass from one atrium to the other
  4. Its blood carries wastes for the first time

15. What is the approximate time required for a heart-beat ?

  1. 0.5 second
  2. 0.8 second
  3. 0.5 minute
  4. 1.0 minute

16. Ventricles are related to

  1. heart only
  2. brain only
  3. both ‘a’ and ‘b’
  4. none of these


17. Universal receivers can receive blood from

  1. Group AB only
  2. Group O only
  3. Groups A, AB
  4. Groups O, A, B, AB

18. Pulmonary artery carries

  1. pure blood from lungs
  2. pure blood to lungs
  3. impure blood to lungs
  4. impure blood from lungs

19. Ions of which of the following minerals play an important role in blood clotting?

  1. Mg
  2. Na
  3. Ca
  4. K

20. What is the condition in which heart is not pumping the blood effectively to meet the requirements of the body called?

  1. stroke
  2. hypertension
  3. myocardial infarction
  4. heart failure

21. At which part of the intestines is the digested food absorbed by the blood?

  1. Ileum
  2. Colon
  3. Jejenum
  4. Caecum

22. Fastest distribution of some injectible material/medicine and with no risk of any kind can be achieved by injecting it into the

  1. muscles
  2. veins
  3. arteries
  4. lymph vessels

23. Where does the impulse of heart beat originate?

  1. S.A. node
  2. A.V. node
  3. vagus nerve
  4. cardiac nerve

24. Which of the following veins does not carry deoxygenated blood?

  1. hepatic vein
  2. hepatic portal vein
  3. renal vein
  4. pulmonary vein

25. What is instrument for measuring blood pressure called?

  1. electrocardiogram
  2. anemometer
  3. stethoscope
  4. sphygmanometer

26. What is the percentage of water in blood plasma?

  1. 90
  2. 80
  3. 98
  4. 60

27. Cheeks of the people in hilly areas are more red in colour due to

  1. increase in production of W.B.C
  2. lesser quantity of plasma
  3. increase in production of R.B.C
  4. decreased production of platelets