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CIRCULATORY SYSTEM
MCQ and fill in the blanks questions by SM Tabrez.
Q1. Human beings have which kind of circulatory system?
(a) Open blood circulatory system
(b) Closed blood circulatory system
(c) Narrow blood circulatory system
(d) Broad blood circulatory system
Q2. Which of the following is a non-circulating fluid?
(a) Plasma
(b) Pericardial fluid
(c) Serum
(d) Synovial fluid
Q3. What is the average volume of blood in an adult body?
(a) 2-3 litres
(b) 8-9 litres
(c) 5-6 litres
(d) 20-30 litres
Q4. The blood is :-
(a) Alkaline
(b) Acidic
(c) Slightly acidic
(d) Slightly alkaline
Q5. The colour of blood when taken from artery and vein respectively?
(a) Bluish red and dark red
(b) Bright red and bluish red
(c) Dark red and bright red
(d) Bright red and dark red
Q6. Combination of oxygen with haemoglobin forms an unstable compound called _______.
(a) Oxaminohaemoglobin
(b) Oxyhaemoglobin
(c) Oxidohaemoglobin
(d) Oxidisedhaemoglobin
Q7. Carbon dioxide combines with haemoglobin to form:-
(a) Carbaminohaemoglobin
(b) Carboxyhaemoglobin
(c) Carbondihaemoglobin
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(d) None of the above
Q8. Carbon monoxide combines with haemoglobin to form:-
(a) Carbaminohaemoglobin
(b) Carboxyhaemoglobin
(c) Carbondihaemoglobin
(d) None of the above
Q9. What is the colour of plasma?
(a) Light yellow
(b) Deep yellow
(c) Deep green
(d) Deep red
Q10. The plasma from which the protein fibrinogen has been removed is called ?
(a) Serum
(b) Fluid
(c) Liquid
(d) None of the above
Q11. Red blood cells are otherwise called?
(a) Leukocytes
(b) Thrombocytes
(c) Erythrocytes
(d) None of the above
Q12. White blood cells are otherwise called?
(a) Leukocytes
(b) Thrombocytes
(c) Erythrocytes
(d) None of the above
Q13. Blood platelets are otherwise called?
(a) Leukocytes
(b) Thrombocytes
(c) Erythrocytes
(d) None of the above
Q14. What is the diameter of RBC?
(a) 4 micron
(b) 3 micron
(c) 2 micron
(d) 7 micron
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Q15. What is the respiratory pigment of blood?
(a) Haemoglobin
(b) Chlorophyll
(c) Pottasium
(d) None of the above
Q16. What is the avg life of RBCs?
(a) 130 days
(b) 120 days
(c) 10 days
(d) 20 days
Q17. RBCs are produced in?
(a) Spleen
(b) Kidney
(c) Heart
(d) Bone marrow
Q18. RBCs are destroyed in?
(a) Spleen, liver and bone marrow
(b) Kidney, heart and pancreas
(c) Brain, nerves and urinary bladder
(d) None of the above
Q19. RBC contain a metal called
(a) Iron
(b) Aluminium
(c) Sodium
(d) Pottasium
Q20. Mature RBC lacks
(a) Nucleus
(b) Mitochondrial
(c) Endoplasmic reticulum
(d) All of these
Q21. Loss of nucleus in RBC provides:-
(a) Flexibility
(b) Increased surface area
(c) Both (a) and (b)
(d) None of the above
Q22. Abnormal increase in RBC causes :-
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(a) Polycythemia
(b) Erythropenia
(c) Leukemia
(d) Leukopenia
Q23. Abmormal decrease in RBC causes :-
(a) Polycythemia
(b) Erythropenia
(c) Leukemia
(d) Leukopenia
Q24. WBC can produce ____ with which they can squeeze through the walls of cappilaries into the
tissues by the process of _____.
(a) Pseudopodia, phagocytosis
(b) Diapedesis, phagocytosis
(c) Pseudopodia, diapedesis
(d) None of the above
Q25. What is the average life of WBC?
(a) 2 days
(b) 8 days
(c) 14 days
(d) 19 days
Q26. Abnormal increase in WBC causes?
(a) Leukemia
(b) Leukopenia
(c) Polycythemia
(d) Dengue fever
Q27. Abnormal decrease in WBC causes?
(a) Leukemia
(b) Leukopenia
(c) Erythropenia
(d) Dengue fever
Q28. Which particular WBC engulf bacteria by the process of phagocytosis?
(a) Neutrophils
(b) Basophils
(c) Monocytes
(d) Eosinophils
Q29. Which of the following WBC produce antibody against antigen?
(a) Lymphocytes
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(b) Monocytes
(c) Basophils
(d) Neutrophils
Q30. Which is the largest WBC?
(a) Lymphocytes
(b) Monocytes
(c) Basophils
(d) Neutrophils
Q31. Which WBC has a kidney shaped nucleus?
(a) Lymphocytes
(b) Monocytes
(c) Basophils
(d) Eosinophils
Q32. Which WBC is most abundant?
(a) Eosinophils
(b) Basophils
(c) Neutrophils
(d) Monocytes
Q33. Which WBC is the least abundant?
(a) Neutrophils
(b) Eosinophils
(c) Basophils
(d) Lymphocytes
Q34. Which WBC is the smallest of all?
(a) Lymphocytes
(b) Monocytes
(c) Basophils
(d) Neutrophils
Q35. Which WBC helps on releasing chemicals to promote inflammation which dilate blood vessels?
(a) Basophils
(b) Monocytes
(c) Lymphocytes
(d) Eosinophils
Q36. _______ is composed of the dead white blood cells together with the tissue cells destroyed by the
bacteria.
(a) WBC
(b) Blood platelets
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(c) Serum
(d) Pus
Q37. Which is the second most abundant WBC?
(a) Basophils
(b) Monocytes
(c) Lymphocytes
(d) Neutrophils
Q38. What is the main function of blood platelets?
(a) Initiate and regulate blood clotting
(b) Engulf bacteria
(c) Produce antibody against antigen
(d) Transport of respiratory gases
Q39. Blood platelets are derived from giant cells called?
(a) Megakaryocytes
(b) RBC
(c) WBC
(d) Tissues
Q40. Blood platelets disintegrate to release a certain chemical called?
(a) Fibrinogen
(b) Albumin
(c) Globulin
(d) Thrombokinase
Q41. What is the life span of blood platelets?
(a) 3-5 days
(b) 10-12 days
(c) 8-14 days
(d) 120 days
Q42. Clotting of blood is also known as?
(a) Blood transfusion
(b) Coagulation
(c) Mitochondria
(d) Phagocytosis
Q43. Which vitamin is essential for the production of prothrombin?
(a) Vitamin A
(b) Vitamin C
(c) Vitamin K
(d) Vitamin B12
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Q44. Which is the soluble substance present in blood plasma which converts into insoluble fibrin during
blood clotting?
(a) Albumin
(b) Globulin
(c) Prothrombin
(d) Fibrinogen
Q45. Clot is also known as?
(a) Fibrin
(b) Pus
(c) Serum
(d) Thrombus
Q46. _______ is a genetic disorder in which blood does not clot properly due to lack of blood clotting
proteins.
(a) Acromegaly
(b) Haemophilia
(c) Diabetes mellitus
(d) Diabetes inspidus
Q47. A person with which blood group can donate to all types of blood groups?
(a) A
(b) B
(c) AB
(d) O
Q48. A person with which blood group can receive blood from all types of blood groups?
(a) A
(b) B
(c) AB
(d) O
Q49. Rh factor was first discovered in?
(a) Donkey
(b) Monkey
(c) Dog
(d) Cat
Q50. Heart is protected by a double walled membranous covering called?
(a) Pericardium
(b) Aorta
(c) Atrium
(d) Artery
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Q51. ________ fluid helps in lubricating heart and reduces friction during heartbeat.
Q52. Heart consists of ______ chambers.
Q53. Two upper chambers of heart are called _______.
Q54. Two lower chambers of heart are called ________.
Q55. ______ of heart have thick muscular walls because they have to pump blood to llng distances.
Q56. ______ brings deoxygenated blood to heart from the lower region of the body.
Q57. _______ brings deoxygenated blood to heart from the upper regions of the body.
Q58. _______ carries deoxygenated blood from heart to the lungs.
Q59. _______ carries oxygenated blood from the lungs to heart.
Q60. _______ carries oxygenated blood from the heart to different parts of the body.
Q61. _______ arteries supply blood to the heart.
Q62. Scientific term used for heart attack is ________.
Q63. _____ veins collect blood from heart walls and pour it into the right auricle.
Q64. _________ is a chest pain due to the insufficient supply of blood to the heart muscle.
Q65. __________ valve is present between right auricle and right ventricle.
Q66. _______ valve is present between left auricle and left ventricle.
Q67. The flaps of tricuspid and bicuspid valves are held in position by tendinous cords called ________.
Q68. Chordae tendinae arises from the muscular projections of the ventricle wall known as ______.
Q69. Bicuspid valve is also known as _____ valve.
Q70. _______ valves are located at the opening of the right ventricle into the pulmonary artery.
Q71. _______ valves are located at the point of origin of aorta from the left ventricle.
Q72. Contraction of auricles are known as auricular ______.
Q73. Contraction of ventricles are known as _____.
Q74. Expansion phase of heart chamber is known as _____.
Q75. The whole sequence of events in the heart beat is called ______.
Q76. The first heart sound is _____.
Q77. The second heart sound is ______.
Q78. The first heart sound is produced when _______ valves get closed sharply at the start of ventricular
systole.
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Q79. The second heart sound is produced when ______ and _______ get closed at the beginning of
ventricular diastole.
Q80. Smaller the size of the body, ______ the heart rate.
Q81. Right ventricle and right auricle is separated by ______.
Q82. An _______ is a vessel which carries blood away from the heart towards any organ.
Q83. Arteries have _____ muscular walls.
Q84. Arteries have _____ lumen.
Q85. Veins have _____ muscular walls.
Q86. Veins have _____ lumen.
Q87. Blood flows uniformly in _____.
Q88. Blood flows in spurts in _____.
Q89. _____ contains thin pocket shaped valves.
Q90. _____ prevent backflow of blood.
Q91. Arteries branch into _____.
Q92. Arterioles breaks up into ______.
Q93. Walls of capillaries consists of a single layer of ______.
Q94. A rise in blood pressure above 140/90 is known as _____.
Q95. ______ vein is the one which starts with capillaries and also ends in capillaries.
Q96. Artery which runs from aorta into liver is called _____.
Q97. Vein which runs from stomach and intestine into the liver is called _____.
Q98. Vein which runs from liver into thr posterior vena cava is called ______.
Q99. Artery which runs from the aorta into kidney is called _______.
Q100. Vein which runs from kidney into the posterior vena cava is called _______.

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