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NEET CRASH COURSE PAPER -14 | Body Fluids and Circulation
1. The problem of electrical discontinuity caused in the normal heart by the connective tissue separating the atria from the ventricles is solved by
( a ) coordinating electrical activity in the atria with electrical activity in the ventricles by connecting them via the bundle of His
( b ) having the A - V node function as a secondary pacemaker
( c ) having an ectopic pacemaker
( d ) coordinating electrical activity in the atria with electrical activity in the ventricles by connecting them via the vagus nerve .
2. Identify the components labelled ( A - D ) in the given flow chart of the blood clotting process .
( a ) coordinating electrical activity in the atria with electrical activity in the ventricles by connecting them via the bundle of His
( b ) having the A - V node function as a secondary pacemaker
( c ) having an ectopic pacemaker
( d ) coordinating electrical activity in the atria with electrical activity in the ventricles by connecting them via the vagus nerve .
2. Identify the components labelled ( A - D ) in the given flow chart of the blood clotting process .
A B C D
( a ) thromobo plastin - prothrom binase - thrombin - fibrinogen
( b ) fibrinogen - thrombin - prothrom binase - thromobo plastin
( c ) prothrom binase - fibrinogen - thrombo plastin - thrombin
( d ) thrombin - thrombo plastin - fibrinogen - prothrom binase
3. Which of the following combination of Rh group of mother and foetus is lethal for the foetus ?
( a ) Rh ( - ) ve mother and Rh ( - ) ve foetus
( b ) Rh ( + ) ve mother and Rh ( + ) ve foetus
( c ) Rh ( + ) ve mother and Rh ( - ) ve foetus
( d ) Rh ( - ) ve mother and Rh ( + ) ve foetus
4. Match the types of WBC listed in Column I with the shape of nucleus given under Column II . Choose the answer which gives the correct combination of alphabets of the two columns .
Column I( Types of WBC ) Column II ( Shape of nucleus )
i . Neutrophils P. Kidney - shaped
ii . Eosinophils q. S - shaped
iii . Basophils r. 3 to 5 lobes
iv. Monocytes S. 2 lobes
t . Disc - shaped
( a ) (i) - r, (ii) - t, (iii) - p, (iv) - q
( b ) (i) - t, (ii) - r, (iii) - q, (iv) - s
( c ) (i) - q, (ii) - p, (iii) - t, (iv) - r
( d ) (i) - r, (ii) - s, (iii) - q, (iv) - p
5. ' Lubb ' sound produced during heart beat is caused by
( a ) ventricular diastole
( b ) ventricular systole
( c ) atrial diastole
( d ) atrial systole .
6 . In the given figure the durations of the events of the cardiac cycle are given . Identify these events and select the correct option .
A B C
( a ) Auricular systole - Joint diastole - Ventricular systole
( b ) Ventricular systole - Joint diastole - Auricular systole
( c ) Ventricular systole - Auricular systole - Joint diastole
( d ) Joint diastole - Auricular systole - Ventricular systole
7 . Which one is correct regarding electrocardiogram ( ECG ) ?
( a ) P - wave represents the electrical excitation of the ventricle
( b ) QRS complex represents repolarisation of the ventricles
( c ) T - wave represents repolarisation of the atria
( d ) By counting the time between two QRS complexes one can determine the pulse rate .
8 . ' Bundle of His ' is a part of which one of the following organs in humans ?
( a ) Brain
( b ) Heart
( c ) Kidney
( d ) Pancreas
9. Given below is the ECG of a normal human . Which one of its components is correctly interpreted ?
( a ) Complex QRS - One complete pulse
( b ) Peak T- Initiation of total cardiac contraction
( c ) Peak P and peak R together - Systolic and diastolic blood pressures
( d ) Peak P- Initiation of left atrial contraction only
10. Select the option having all the correct characteristics .
11. Study the diagram given below and identify the cells labelled as A , B , C and D , and choose the correct option .
( a ) A = Eosinophil , B - Erythrocyte , C - Neutrophiland D = Basophil
( b ) A = Eosinophil , B = Lymphocyte , C = Neutrophil and D = Monocyte
( c ) A = Erythrocyte , B = Basophil , C = Neutrophil and D = Lymphocyte
( d ) A - Eosinophil , B = Monocyte , C = Neutrophil and D = Lymphocyte
12. Which of the following statements is / are incorrect ?
( i ) Most of the reptiles have partially four chambered heart .
( ii ) Fishes have single chambered heart .
( iii ) In birds and mammals oxygenated and deoxygenated blood remains separated .
( iv ) In amphibians , blood travels only once through the heart during one cycle of passage through the body .
( a ) ( ii ) and ( iv )
( b ) ( ii ) and ( iii )
( c ) ( i ) and ( iv )
( d ) ( ii ) only
13. What is the nature of blood passing through blood vessels A , B , C and D respectively ?
( a ) A - Deoxygenated , B - Oxygenated , C - Deoxygenated , D - Oxygenated
( b ) A - Deoxygenated , B - Deoxygenated , C - Oxygenated , D - Oxygenated
( c ) A - Oxygenated , B - Oxygenated , C - Deoxygenated D - Deoxygenated
( d ) A - Oxygenated , B - Deoxygenated , C - Oxygenated , D - Deoxygenated
14. Which one of the following is the correct pathway for propagation of cardiac impulse ?
( a ) SA node → AV node → Bundle of His → Purkinje fibres
( b ) AV node → Bundle of His → SA node → Purkinje fibres
( c ) SA node → Purkinje fibres → AV node → Bundle of His
( d ) Purkinje fibres → AV node → SA node → Bundle of His
15. Match column I with column II and select the correct option from the codes given below .
Column I Column II
A. Factor II ( i ) Thromboplastin
B. Factor III ( ii ) Prothrombin
C. Factor VIII ( iii ) Hageman factor
D. Factor XII ( iv ) Antihaemophilic factor ( AHF )
A B C D
( a ) ( iii ) ( iv ) ( ii ) ( i )
( b ) ( iv ) ( iii ) ( ii ) ( i )
( c ) ( ii ) ( i ) ( iv ) ( iii )
( d ) ( i ) ( ii ) ( iii ) ( iv )
16. The given figure is of circulatory system .
Identify the labelled parts ( A - D ) from the list ( i - vii ) .
( i ) Pulmonary circulation
( ii ) Systemic circulation
( iii ) Superior vena cava
( iv ) Inferior vena cava
( v ) Aorta
( vi ) Veins and venules
( vii ) Arterioles and capillaries
( a ) ( v ) ( iii ) ( iii ) ( vii )
( b ) ( vii ) ( iv ) ( i ) ( vi )
( c ) ( v ) ( iii ) ( ii ) ( vii )
( d ) ( vii ) ( v ) ( i ) ( vi )
17. Read the statements regarding the cardiac system and choose the right option .
A. Human heart is an ectodermal derivative .
B. Mitral value guards the opening between the right atrium and left ventricle .
C. SA node is located on the left upper corner of the right atrium .
D. Stroke volume x Heart rate = Cardiac output .
( a ) A alone is correct
( b ) A and B alone are correct
( c ) B and C alone are correct
( d ) D alone is correct
18. In order for the blood to flow from right ventricle to left ventricle in mammalian heart , it must flow through
( a ) right ventricle , pulmonary arteries , lungs , pulmonary veins , left atrium
( b ) right ventricle , pulmonary veins , lungs , pulmonary arteries , left atrium
( c ) right ventricle , right atrium , lungs , pulmonary veins , left atrium
( d ) right ventricle , systemic aorta , lungs , pulmonary veins , left atrium .
19. What is correct for blood group O ?
( a ) no antigens but both a and b antibodies are present
( b ) A antigen and b antibody
( c ) antigen and antibody both absent
( d ) A and B antigens and a , b , antibodies .
20. Which of the following statements is true for lymph ?
( a ) WBCs + serum
( b ) Blood - RBCs and some proteins
( c ) RBCs + WBCs + plasma
( d ) RBCs + proteins + platelets .
21. There is no DNA in
( a ) mature RBCs
( b ) eosinophils
( c ) lymphocytes
( d ) basophils .
22. Bicuspid valve regulates the flow of blood from
( a ) left ventricle to SA - node
( b ) left auricle to left ventricle
( c ) post caval to right auricle
( d ) right auricle to right ventricle .
23. In the figure given below , which blood vessel represents vena cava ?
( a ) C
( b ) D
( c ) A
( d ) B
24. Which of the following is the diagrammatic representation of standard electrocardiogram ( ECG ) ?
25. Which one of the following is a matching pair ?
( a ) Lubb - sharp closure of AV valves at the beginning of ventricular systole
( b ) Dubb- sudden opening of semilunar valves at the beginning of ventricular diastole
( c ) Pulsation of the radial artery valves in the blood vessels
( d ) Initiation of the heart beat - Purkinje fibres .
26. Manifestation of increase in the blood pressure of a person is called
( a ) hypertension
( b ) atherosclerosis
( c ) arteriosclerosis
( d ) none of these .
27. Coagulation of blood in blood vessels in living body is prevented by
( a ) prothrombin
( b ) heparin
( c ) prothrombin and calcium together
( d ) plasminogen and calcium together
28. Human blood maintains homeostasis in the internal environment of the body by
( a ) replenishment of nutrients and oxygen and elimination of metabolic wastes from the extracellular fluid
( b ) replenishment of oxygen and elimination of CO₂
( c ) maintenance of blood sugar level and conversion of aminoacids into urea and destruction of wornout RBCs
( d ) maintenance of ion concentration in the blood and body fluids by eliminating nitrogenous wastes .
29. Which of the following carries blood rich in food materials , such as glucose and amino acids , from intestine to liver ?
( a ) dorsal aorta
( b ) renal portal vein
( c ) mesenteric artery
( d ) hepatic portal vein
30. Vitamin K is necessary
( a ) R.B.C
( b ) W.B.C
( c ) plasma
( d ) production of prothrombin .
31. The thickening of walls of arteries is called
( a ) arthritis
( b ) aneurysm
( c ) arteriosis
( d ) arteriosclerosis .
32. In which one of the following pairs , two terms represent the same thing ?
( a ) lymphocyte - leucocyte
( b ) plasma - serum
( c ) mitral valve - bicuspid valve
( d ) atrioventricular node - pacemaker .
33. The largest lymph organ of the body is
( a ) the cervical node
( b ) the spleen
( c ) the axillary node
( d ) inguinal node .
34. A drop of each of the following , is placed separately on four slides . Which of them will not coagulate ?
( a ) blood serum
( b ) sample from the thoracic duct of lymphatic system
( c ) whole blood from pulmonary vein
( d ) blood plasma .
35. The given figure shows an angiogram of the coronary blood vessel . Which one of the following statements correctly describes , what is being done ?
( a ) it is coronary artery which has a cancerous growth that is being removed
( b ) it is coronary artery which is blocked by a plaque and the same is being cracked
( c ) it is coronary vein in which the defective valves are being opened
( d ) it is coronary vein blocked by a parasite ( blood fluke ) that is being removed
36. In the given figure of the heart which of the marked structure ( 1 , 2 , 3 , 4 , 5 ) carrying oxygenated blood ?
( a ) 1, 2, 3 & 4
( b ) 1 & 5
( c ) 1 & 4
( d ) 3 & 5
37. Which chamber of the human heart has the thickest muscular wall ?
( a ) left auricle
( b ) left ventricle
( c ) right auricle
( d ) right ventricle .
38. Pacemaker is
( a ) AV node
( b ) SA node
( c ) AS node
( d ) SV node.
39. In a typical heart , If EDV is 120mL of blood and ESV is 50 mL of blood , the stroke volume ( SV ) is
( a ) 120-50 = 70 mL
( b ) 120 + 50 = 70 mL
( c ) 120 + 50 = 6000 mL
( d ) 120 + 50 = 2.4 mL .
40. The frequency of heart beat in our body is maintained by
( a ) AV Node
( b ) SA Node
( c ) Node of Ranvier
( d ) Chordae tendineae .
41. Choose the correct statement .
( a ) the T - wave in an ECG represents excitation of ventricles .
( b ) The sum of P and I waves in a given time period can determine the heart beat rate of an individual .
( c ) The end of the P - wave marks the end of the systole .
( d ) In a standard ECG , a person is connected to the machine with three electrical leads .
42. Which proteolytic enzyme induces lysis of fibrin during fibrinolysis ?
( a ) Thrombin
( b ) Plasmin
( c ) Prothrombin
( d ) Heparin
43. Originating in bone marrow , circulating in blood for 1-2 days , migrating to connective tissue and forming macrophages is a characteristic of
( a ) eosinophils
( b ) basophils
( c ) monocytes
( d ) lymphocytes .
44. Person with blood group AB is considered as universal recipient because he has
( a ) both A and B antigens on RBC but no antibodies in the plasma
( b ) both A and B antibodies in the plasma
( c ) no antigen on RBC and no antibody in the plasma
( d ) both A and B antigens in the plasma but no antibodies .
45. Doctors use stethoscope to hear the sounds produced during each cardiac cycle . The second sound is heard when
( a ) AV node receives signal from SA node
( b ) AV valves open up
( c ) Ventricular walls vibrate due to gushing in of blood from atria
( d ) Semilunar valves close down after the blood flows into vessels from ventric.
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Ans key
1. A, 2.A, 3.D, 4.D, 5.B, 6.D, 7.D, 8.B, 9.A, 10.B, 11.D, 12.D, 13.A, 14.A 15.C, 16.A, 17.D, 18.A, 19.A, 20.B, 21.A, 22.B, 23.B, 24.D, 25.A, 26.B, 27.B, 28.D, 29.D, 30.D, 31.D, 32.C, 33.B, 34.A, 35.B, 36.C, 37.B, 38.B, 39.A, 40.B, 41.D, 42.B, 43.C, 44.A, 45.D
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