NEET Biology Body Fluids and Circulation / शरीर के तरल पदार्थ और परिसंचरण Question Bank

done Self Evaluation Test - Body Fluids and Circulation Total Questions - 78

• question_answer1)
  Which of the following is the largest lymphatic   vessels of the human body?
  A)
  Lacteal duct done clear
  B)
  Thoracic duct done clear
  C)
  Cisterna chili done clear
  D)
  Right lymphatic duct done clear
  View Solution play_arrow

• question_answer2)
  Which of the following cations is require for the conversion of prothrombin into active thrombin by thromboplastin?
  A)
  \[C{{u}^{2+}}\]             done clear
  B)
                     \[F{{e}^{3+}}\] done clear
  C)
  \[F{{e}^{2+}}\]                       done clear
  D)
  \[C{{a}^{2+}}\] done clear
  View Solution play_arrow

• question_answer3)
  The normal pH of the arterial blood is:
  A)
  6.8                 done clear
  B)
                     7.8 done clear
  C)
  7.4                 done clear
  D)
                     8.8 done clear
  View Solution play_arrow

• question_answer4)
  If cardiac supply of vagus nerve is cut then:
  A)
  Rate of heart beat increases. done clear
  B)
  Rate of heart beat decreases. done clear
  C)
  There is no change in heartbeat. done clear
  D)
  Heart stops beating. done clear
  View Solution play_arrow

• question_answer5)
  Blood pressure increases and heart rate decreases in response to:
  A)
  Exercise done clear
  B)
  Haemorrage done clear
  C)
  Exposure to high altitude done clear
  D)
  Increased intracranial pressure done clear
  View Solution play_arrow

• question_answer6)
  Systolic pressure of heart is higher than diastolic pressure, because      
  A)
  Blood is forcefully pumped into arteries by the heart during systole and not during diastole. done clear
  B)
  Arteries offer resistance to the flowing of blood during systole only. done clear
  C)
  Arteries contract during systole only. done clear
  D)
  Volume of blood in heart is greater during systole than during diastole. done clear
  View Solution play_arrow

• question_answer7)
  Match column-I with column-II and choose the correct option.

  	Column-I		Column-II
  A.	Basophils	I.	Phagocytes
  B.	Neutrophils	II.	Secrete histamine, serotonin, heparin and involved in inflammatory response
  C.	Monocytes	III.	Resist infections and are also involved in allergic reaction
  D.	Eosinophils	IV.	Immunity
  E.	Lymphocytes	V.

  A)
  A- II;    B and    C- I;      D- III;   E- IV done clear
  B)
  A- II;    B and    C- III;    D- I;     E- IV done clear
  C)
  A- III;   B and    C- I;      D- II;    E- IV done clear
  D)
  A-IV;   B and    C-III;     D-I;      E-II done clear
  View Solution play_arrow

• question_answer8)
  The given diagram represents human heart with four chambers labelled as 1, 2, 3 & 4? Which labelled structure receives carbon dioxide rich blood from the body?
  A)
  1-Left atrium    done clear
  B)
                     2-Left ventricle done clear
  C)
  3- Right atrium   done clear
  D)
                     4- Right ventricle done clear
  View Solution play_arrow

• question_answer9)
  Anaemia due to failure of maturation of RBC is:
  A)
  Von Kluger's disease                    done clear
  B)
  Microcytic anaemia done clear
  C)
  Normocytic anaemia                   done clear
  D)
  Pernicious anaemia done clear
  View Solution play_arrow

• question_answer10)
  Which of the following accelerates extrinsic or tissue thromboplastin formation?
  A)
  Factor VII (proconvertin) done clear
  B)
  Factor XI (plasma thromboplastin antecedent) done clear
  C)
  Heparin done clear
  D)
  Calcium done clear
  View Solution play_arrow

• question_answer11)
  Which of the following structures of the lymphatic system acts primarily as a filter for detecting and destroying microorganisms in lymph traveling through major lymph vessels?
  A)
  Lymph nodes      done clear
  B)
  Thymus done clear
  C)
  Lymph capillaries done clear
  D)
  Tonsil, but not the appendix done clear
  View Solution play_arrow

• question_answer12)
  pH of blood in arteries and veins is:
  A)
  Same done clear
  B)
  More in arteries and less in veins done clear
  C)
  More in veins and less in arteries done clear
  D)
  None of the above done clear
  View Solution play_arrow

• question_answer13)
  The blood protein involved in blood coagulation is:
  A)
  Heparin         done clear
  B)
                     Prothrombin done clear
  C)
  Thrombin        done clear
  D)
                     All of these done clear
  View Solution play_arrow

• question_answer14)
  An open circulatory system occurs in:
  A)
  Reptiles          done clear
  B)
                     Man done clear
  C)
  Animals          done clear
  D)
                     Insects done clear
  View Solution play_arrow

• question_answer15)
  In the ABO system of blood groups, if both antigens are present but no antibody, the blood group of the individual would be:
  A)
  B                                              done clear
  B)
  0 done clear
  C)
  AB                                            done clear
  D)
  A done clear
  View Solution play_arrow

• question_answer16)
  Which of the following organs can be called as a sort of "blood bank"?
  A)
  Lungs                                        done clear
  B)
  Heart done clear
  C)
  Liver                                         done clear
  D)
  Spleen done clear
  View Solution play_arrow

• question_answer17)
  Haematocrit value is the expression of:
  A)
  Ratio of oxyhaemoglobin and reduced haemoglobin in blood. done clear
  B)
  Ratio of normal and abnormal haemoglobin in blood. done clear
  C)
  Ratio of red blood corpuscles to plasma in blood. done clear
  D)
  None of the above. done clear
  View Solution play_arrow

• question_answer18)
  Which one of the following blood vessel is without valves?
  A)
  Artery                                        done clear
  B)
  Pulmonary aorta done clear
  C)
  Vein                                          done clear
  D)
  Systemic aorta done clear
  View Solution play_arrow

• question_answer19)
  A vein possesses a large lumen because:
  A)
  Tunica media and tunica externa form single coat. done clear
  B)
  Tunica media and tunica interna form single coat. done clear
  C)
  Tunica interna, tunica media and tunica externa are thin. done clear
  D)
  tunica media is a thin coat. done clear
  View Solution play_arrow

• question_answer20)
  The purpose of the AV node is to __ and the purpose of the Purkinje fibres is to__.
  A)
  Create simultaneous atrial and ventricular depolarisation; speed up transmission of the cardiac impulse into the ventricle. done clear
  B)
  Delay ventricular depolarisation relative to atrial depolarisation; insulate the cardiac impulse from the general ventricular fibres. done clear
  C)
  Delay ventricular depolarisation relative to atrial depolarisation; transmit the cardiac impulse to very small localised groups of ventricular fibres. done clear
  D)
  Delay atrial depolarisation relative to ventricular depolarisation; transmit the cardiac impulse to very small localized groups of ventricular fibres. done clear
  View Solution play_arrow

• question_answer21)
  If cardiac output is 6.0 L/min and 1.44 L of urine is formed daily, what percentage of flow in the nephrons and collecting ducts is reabsorbed (kidneys receive 20% of cardiac output)?
  A)
  0.1%                                         done clear
  B)
  0.02% done clear
  C)
  99.9%                                       done clear
  D)
  Data insufficient done clear
  View Solution play_arrow

• question_answer22)
  The pacemaker of the human heart is:
  A)
  SA node         done clear
  B)
                     Tricuspid valve done clear
  C)
  AV node                                    done clear
  D)
  All of these done clear
  View Solution play_arrow

• question_answer23)
  Papillary muscles are associated with:
  A)
  Ventricles        done clear
  B)
                     Auricles done clear
  C)
  Dorsal aorta      done clear
  D)
                     Sinus venosus done clear
  View Solution play_arrow

• question_answer24)
  If nerves of heart are cut, then heart will:
  A)
  Beat rhythmically done clear
  B)
                     Stop working done clear
  C)
  Beat arhythmically                      done clear
  D)
  Shrink done clear
  View Solution play_arrow

• question_answer25)
  Cardiac output is:
  A)
  The product of heart rate and stroke volume. done clear
  B)
  The product of auricular and ventricular volume. done clear
  C)
  The blood pumped in one minute. done clear
  D)
  Both [a] and [c] done clear
  View Solution play_arrow

• question_answer26)
  In the human body, the highest blood pressure can be recorded in:
  A)
  Arteries near the heart. done clear
  B)
  Veins returning to the heart. done clear
  C)
  Capillaries of the body tissue. done clear
  D)
  The lungs. done clear
  View Solution play_arrow

• question_answer27)
  The following statement contains some of the events that lead to a 'heart attack'.

  (i) Blood clot that breaks, loose and passes along blood vessel.

  (ii) Region of heart muscle suffers a myocardial infarction.

  (iii) Narrow branch of coronary artery becomes blocked by thrombus.

  (iv) Thrombus forms on inner surface of coronary artery.

  The correct sequence of these events is:

  A)
  (i), (iv), (ii), (iii) done clear
  B)
  (i), (iv), (iii), (ii) done clear
  C)
  (iv), (i), (ii), (iii) done clear
  D)
  (iv), (i), (iii), (ii) done clear
  View Solution play_arrow

• question_answer28)
  Which of the following term is correctly matched with its description?
  A)

  Plasma

  Straw coloured fluid that consists of suspended blood cells

  done clear
  B)

  Heart

  Site where exchange of nutrients and gases occur

  done clear
  C)

  Capillary

  A red colour fluid that provides food to the cells

  done clear
  D)

  Blood

  Pumping station of the body

  done clear
  View Solution play_arrow

• question_answer29)
  Carotid artery carries:
  A)
  Impure blood from the brain. done clear
  B)
  Impure blood to kidneys. done clear
  C)
  Oxygenated blood to the brain. done clear
  D)
  Oxygenated blood to the heart. done clear
  View Solution play_arrow

• question_answer30)
  Pulmonary aorta in mammalian embryo communicates with carotico-systemic aorta by a thin vessel called ductus arteriosus which latercloses and remains in adult as:
  A)
  Fossa ovalis         done clear
  B)
    Ligamentum arteriosus done clear
  C)
  Carotico-pulmonary aperture done clear
  D)
  None of the above done clear
  View Solution play_arrow

• question_answer31)
  The heart sound 'murmur' is heard during:
  A)
  Closing of bicuspid and tricuspid valves. done clear
  B)
  Closing of semilunar valves. done clear
  C)
  Leaking of blood through valves. done clear
  D)
  All of the above done clear
  View Solution play_arrow

• question_answer32)
  Myocardial Infarction is caused by:
  A)
  Hardening of arteries.     done clear
  B)
  Lumpy thickness develop in the inner walls of arteries. done clear
  C)
  Clot which may occur in the lumen of a coronary artery. done clear
  D)
  Sudden interruption in blood flow towards a portion of heart. done clear
  View Solution play_arrow

• question_answer33)
  In arteriosclerosis:
  A)
  Arterial walls become very thin and weak so that the blood oozes out of the walls. done clear
  B)
  Sex linked heredity is involved. done clear
  C)
  Blood coagulates even in the arteries. done clear
  D)
  Arterial walls become inelastic and thickened. done clear
  View Solution play_arrow

• question_answer34)
  The accompanying diagram shows a small part of a normal electrocardiogram. Which region represents a wave of excitation passing through the ventricles?   
  A)
  A                                              done clear
  B)
  B done clear
  C)
  C                                              done clear
  D)
  D done clear
  View Solution play_arrow

• question_answer35)
  Which layer of the wall of blood vessels is made up of circular smooth muscles?
  A)
  Outer                                        done clear
  B)
  Middle done clear
  C)
  Inner                                         done clear
  D)
  Both [a] and [b] done clear
  View Solution play_arrow

• question_answer36)
  First heart sound (Lubb) coincides with the ______ wave of ECG:
  A)
  R done clear
  B)
  T done clear
  C)
  P                                              done clear
  D)
  Q done clear
  View Solution play_arrow

• question_answer37)
  QRST is related with:
  A)
  Ventricular contraction or depolarization done clear
  B)
               Auricular contraction done clear
  C)
               Auricular relaxation done clear
  D)
               Cardiac cycle done clear
  View Solution play_arrow

• question_answer38)
  Child death may occur in the marriage between:
  A)
  \[R{{h}^{+}}\]man and  \[R{{h}^{+}}\] woman. done clear
  B)
  \[R{{h}^{+}}\]man and  \[R{{h}^{-}}\] woman. done clear
  C)
  \[R{{h}^{-}}\] man and \[R{{h}^{-}}\] woman. done clear
  D)
  \[R{{h}^{-}}\] man and  \[R{{h}^{+}}\] woman. done clear
  View Solution play_arrow

• question_answer39)
  Artery differs from vein in having:
  A)
  Narrow wall                                done clear
  B)
  Thick walls done clear
  C)
  Valves                                       done clear
  D)
  None of the above done clear
  View Solution play_arrow

• question_answer40)
  'P' wave of ECG occurs before the:
  A)
  Onset of ventricular contraction. done clear
  B)
  End of arterial contraction. done clear
  C)
  Beginning of atrial contraction. done clear
  D)
  None of the above. done clear
  View Solution play_arrow

• question_answer41)
  In human, the opening of post caval in the right auricle is guarded by:
  A)
  Bicuspid valve done clear
  B)
                     Tricuspid valve done clear
  C)
  Eustachian valve                        done clear
  D)
  Sino-auricular valve done clear
  View Solution play_arrow

• question_answer42)
  The accompanying diagram shows three stages in the cardiac cycle. Which of the followiing sequence is correct?
  A)
  2, 3, 1           done clear
  B)
                     1, 2, 3 done clear
  C)
  2, 1, 3                                       done clear
  D)
  3, 1, 2 done clear
  View Solution play_arrow

• question_answer43)
  Different factors play important roles in coagulation of blood, some of the factors are listed in column-I and their nomenclatures are given in column-II. Find out the accurate matching.

  	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 globulin

  A)
  A-II;     B-I;      C-IV;    D-III done clear
  B)
  A-I;      B-II;     C-III;    D-IV done clear
  C)
  A-III;    B-IV;    C-II;     D-I done clear
  D)
  A-IV;   B-III;     C-II;     D-I done clear
  View Solution play_arrow

• question_answer44)
  Wall of blood capillary is formed of:
  A)
  Haemocytes                               done clear
  B)
  Parietal cells done clear
  C)
  Endothelial cells                          done clear
  D)
  Oxyntic cells done clear
  View Solution play_arrow

• question_answer45)
  Heart beats are accelerated by:
  A)
  Cranial nerves and acetylcholine done clear
  B)
  Sympathetic nerves and acetylcholine done clear
  C)
  Cranial nerves and adrenaline done clear
  D)
  Sympathetic nerves and epinephrine done clear
  View Solution play_arrow

• question_answer46)
  Inmammals, veins differs from arteries in having:
  A)
  Thicker walls done clear
  B)
  Deeply present done clear
  C)
  Carry blood away from heart done clear
  D)
  Internal valves done clear
  View Solution play_arrow

• question_answer47)
  Which of the following best describes an artery?
  A)
  Carries blood away from the heart. done clear
  B)
  Carries oxygenated blood. done clear
  C)
  Contains valves. done clear
  D)
  Has thin walls. done clear
  View Solution play_arrow

• question_answer48)
  Blood clotting can be prevented by the use of potassium oxalate. It is due to:
  A)
  Checking of conversion of fibrinogen into fibrin. done clear
  B)
  Inactivation of all factors for blood coagulation. done clear
  C)
  Neutralisation of acidic medium. done clear
  D)
  Removal of free \[C{{a}^{2+}}\] ions. done clear
  View Solution play_arrow

• question_answer49)
  You are required to draw blood from a patient and to keep it in a test tube for analysis of blood corpuscles and plasma. You are also provided with the following four types of test tubes. Which of them will you not use for the purpose?
  A)
  Test tube containing calcium bicarbonate done clear
  B)
  Chilled test tube done clear
  C)
  Test tube containing heparin done clear
  D)
  Test tube containing sodium oxalate done clear
  View Solution play_arrow

• question_answer50)
  A drop of each of the following, is placed separately on four slides. Which of them will not coagulate?
  A)
  Whole blood from pulmonary vein done clear
  B)
  Blood plasma done clear
  C)
  Blood serum done clear
  D)
  Sample from the thoracic duct of lymphatic system. done clear
  View Solution play_arrow

• question_answer51)
  Blood circulation that starts in capillaries and ends in capillaries is called:
  A)
  Portal circulation done clear
  B)
                     Hepatic circulation done clear
  C)
  Lymphatic circulation                  done clear
  D)
  Renal circulation done clear
  View Solution play_arrow

• question_answer52)
  Which of the following substances, if introduced into the blood stream, would cause coagulation of blood at the site of its introduction?
  A)
  Prothrombin     done clear
  B)
                     Fibrinogen done clear
  C)
  Thromboplastin                          done clear
  D)
  Heparin done clear
  View Solution play_arrow

• question_answer53)
  Match the blood vessels of human heart listed under column-I with the functions given under column-II; Choose the answer which gives the correct combination of both columns.

  	Column-I (Blood vessel)		Column-II (Function)
  A.	Superior vena cava	I.	Carries deoxygenated blood to lungs
  B.	Inferior vena cava	II.	Carries oxygenated blood to lungs
  C.	Pulmonary artery	III.	Brings deoxygenated blood from lower Part of the body to the right atrium
  D.	Pulmonary vein	IV.	Brings oxygenataed blood to the left atrium
  		V.	Brings oxygenated blood from upper parts of the body into the right atrium

  A)
  A-V;     B-I;      C-III;   D-II done clear
  B)
  A-V;     B-III;    C-I;     D-IV done clear
  C)
  A-IV;    B-V;     C-III;   D-I done clear
  D)
  A-V;     B-I;      C-II;    D-III done clear
  View Solution play_arrow

• question_answer54)
  Which of the following statements (s) is/are incorrect?

  (i) The AV node and the bundle of His constitute the electrical link between the atria and the ventricles.

  (ii) The bundle of His is a bundle of electrical nodes which allows the ventricles to contract.

  (iii) The bundle of His is a group of fibres that carry the electrical impulses through the centre of the heart.

  (iv) The bundle of His is located in the arterial region.

  A)
  (ii), (iii) and (iv)  done clear
  B)
                     (i), (iii) and (iv) done clear
  C)
  (i), (ii) and (iv)    done clear
  D)
                     (i), (ii) and (iii) done clear
  View Solution play_arrow

• question_answer55)
  A heart attack occurs when:  
  A)
  A heart valve malfunctions. done clear
  B)
  A coronary artery is blocked. done clear
  C)
  The heart is weakened by overwork. done clear
  D)
  The aorta is blocked. done clear
  View Solution play_arrow

• question_answer56)
  Emphysema damages the tissues of the lungs and slows pulmonary blood flow. This causes blood to back up, stretching and weakening the walls of the heart and blood vessels. Which of the following do you think would be most affected by this backup of blood from the lungs?
  A)
  Aorta                                        done clear
  B)
  Right atrium done clear
  C)
  Left atrium      done clear
  D)
                     Right ventricle done clear
  View Solution play_arrow

• question_answer57)
  In the human heart, blood from the lungs enter the heart through the left atrium, pumps into the left ventricle, out the aorta and through the body, and then returns into the right atrium, pumps into the right ventricle and exits to the lungs. Using the diagram, which set of letters (1, 2, 3, 4, 5) correctly represents the process describe above?
  A)
  5, 4, 1, 2, 3     done clear
  B)
                     2, 3, 1, 5, 4 done clear
  C)
  3, 4, 1, 2, 5      done clear
  D)
                     4, 3, 1, 5, 2 done clear
  View Solution play_arrow

• question_answer58)
  Which of the following vein has least amount of urea?
  A)
  Pulmonary vein done clear
  B)
                     Hepatic portal vein done clear
  C)
  Hepatic vein                               done clear
  D)
  Renal vein done clear
  View Solution play_arrow

• question_answer59)
  We feel sleepy just after taking meals because:
  A)
  Blood pressure increases   done clear
  B)
  Blood pressure decreases done clear
  C)
  Body weight increases done clear
  D)
  We feel lethargic done clear
  View Solution play_arrow

• question_answer60)
  Which of the following statements about the control of circulation in humans is incorrect?
  A)
  Sympathetic nerve input to skeletal muscle causes the blood vessels in the muscle to dilate. done clear
  B)
  Blood flow can be regulated by autonomic nerve signals emanating from cardiovascular control centres in the medulla of the brain. done clear
  C)
  Carotid artery chemosensors detect low \[{{O}_{2}}\] levels in the blood and promote, increased blood pressure. done clear
  D)
  Hormones such as angiotensin and vasopressin cause venules to constrict. done clear
  View Solution play_arrow

• question_answer61)
  Identify the correct statements regarding the human blood.

  (i) It constitutes 30-35% of the total extracellular fluid.

  (ii) The volume of the blood in an adult is 5L.

  (iii) Glucose concentration in the blood is 50 mg/100 mL.

  (iv) Cholesterol concentration in the blood is 30 mg/100mL.

  (v) Urea level in the blood is 10 mg/100 mL.

  A)
  (i), (ii) and (iii) done clear
  B)
                     (iii), (iv) and (v) done clear
  C)
  (iv) and (v)                                 done clear
  D)
  (i) and (ii) done clear
  View Solution play_arrow

• question_answer62)
  Persons suffering from high blood pressure should take the following precaution to avoid excessive rise in their blood pressure:
  A)
  Sleep as much as possible done clear
  B)
  Avoid standing    done clear
  C)
        Increase their weight done clear
  D)
  Avoid emotional disturbances and excitement. done clear
  View Solution play_arrow

• question_answer63)
  If heart of a mammal is injected with 2% \[CaC{{l}_{2}}\] solutions, then:
  A)
  Heart beat will increase. done clear
  B)
  Heart beat will first increase then decrease. done clear
  C)
  Heart beat will stop. done clear
  D)
  No effect done clear
  View Solution play_arrow

• question_answer64)
  Tunica adventitia is the:
  A)
  Outermost fibrous layer of the artery. done clear
  B)
  Middle vascular layer of the artery. done clear
  C)
  Outermost covering of the stomach. done clear
  D)
  Innermost layer of fine blood capillaries. done clear
  View Solution play_arrow

• question_answer65)
  Which one of the following will be the cardiac output (in litres per minute) of a heart that has a stroke volume of 0.07 litres and is beating at a rate of 90 per minute?        
  A)
  63.30            done clear
  B)
                     63.00 done clear
  C)
  00.63                                        done clear
  D)
  06.30 done clear
  View Solution play_arrow

• question_answer66)
  Chordae tendinae are found in:
  A)
  Joints of legs                              done clear
  B)
  Atria of heart done clear
  C)
  Ventricles of brain                       done clear
  D)
  Ventricles of heart done clear
  View Solution play_arrow

• question_answer67)
  The heartbeat of a person increases at the time of an interview due to secretion of:
  A)
  Renin                                        done clear
  B)
  Adrenaline done clear
  C)
  ADH                                         done clear
  D)
  ACTH done clear
  View Solution play_arrow

• question_answer68)
  Mitral valve in mammals guards the opening between:
  A)
  Left auricle and left-ventricle done clear
  B)
  Pulmonary vein and left auricle done clear
  C)
  Stomach and intestine done clear
  D)
               Liver and spleen done clear
  View Solution play_arrow

• question_answer69)
  PR interval in a normal ECG, at heart beat of 70/min is approximately:
  A)
  180ms                                       done clear
  B)
  80ms done clear
  C)
  8ms                                          done clear
  D)
  320ms done clear
  View Solution play_arrow

• question_answer70)
  Which of the following correctly traces the electrical impulses that trigger each heartbeat?
  A)
  Ventricles-Pacemaker-AV node-Atria done clear
  B)
  Pacemaker-AV node-Atria-Ventricles done clear
  C)
  Atria-Pacemaker-AV node-Ventricles done clear
  D)
  Pacemaker-Atria-AV node-Ventricles done clear
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• question_answer71)
  Which of the following is not one of the reasons that closed circulatory systems are more efficient than open circulatory systems?
  A)
  Closed systems rely exclusively on simple diffusion for transport, whereas open systems rely on pumping mechanisms. done clear
  B)
  Transport within closed systems is more rapid than in open systems. done clear
  C)
  Blood can easily be directed to specific areas in closed systems, but not in open systems. done clear
  D)
  Closed systems operate better under higher pressure than do open systems. done clear
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• question_answer72)
  Consider the statements and choose the correct option.

  (i) Proteins contributes 6-8% of the blood plasma.

  (ii) Plasma contain very high amount of minerals.

  (iii) Plasma without the clotting factors is called serum.

  (iv) Glucose, amino acids, lipids, etc., are also present in the plasma as they are always in transit in the body.

  A)
  All are correct       done clear
  B)
                    Only (ii) is false done clear
  C)
  Only (i) is correct done clear
  D)
                     All are false done clear
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• question_answer73)
  Cardiac cycle in man takes about:
  A)
  0.5 seconds     done clear
  B)
                     1.0 second done clear
  C)
  1.2 seconds       done clear
  D)
                     0.8 seconds done clear
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• question_answer74)
  The left atrio-ventricular aperture in man is guarded by:
  A)
  Tricuspid valve   done clear
  B)
                     Semilunar valve done clear
  C)
  Bicuspid valve    done clear
  D)
                     Sphincter valve done clear
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• question_answer75)
  What happens when the pacemaker is nonfunctional?             
  A)
  Only the auricles will contract rhythmically. done clear
  B)
  The cardiac muslces do not contract in a coordinated manner rhythmically. done clear
  C)
  Only ventricles will contract rhythmically. done clear
  D)
  Auricles and ventricles contract simultaneously. done clear
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• question_answer76)
  A recording of the electrical activity of a patient's heart, shows that the atria are contracting regularly and normally, but every few beats the ventricles fail to contract. Which of the following is probably not functioning properly?    
  A)
  AV node         done clear
  B)
                     Semilunar valve done clear
  C)
  Coronary artery                          done clear
  D)
  Pacemaker done clear
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• question_answer77)
  Which of the following statements is incorrect about lymph.

  (i) Lymph is colourful as it has haemoglobin but no RBC.

  (ii) The fluid present in lymphatic system is called lymph.

  (iii) It contains specilised lymphocytes which are responsible for immunity of the body.

  (iv) Lymph is an important carrier for nutrients and hormones.

  (v) Fats are absorbed through lymph in the lacteals present in the intestinal villi.

  A)
  Only (i)           done clear
  B)
                     (iii) and (iv) done clear
  C)
  (ii) and (iii)       done clear
  D)
                     Only (iv) done clear
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• question_answer78)
  Which one of the statement is correct with reference to the circulation of blood in a mammal?
  A)
  Left auricle receives oxygenated blood. done clear
  B)
  Pulmonary artery carries oxygenated blood to the lungs. done clear
  C)
  Blood from the lungs is returned to heart through 2-veins, one from each lung. done clear
  D)
  None of the above done clear
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