Body Fluids And Circulation

Q1. The fastest distribution of some injectible material/ medicine with no risk of any kind can be achieved by
injecting it into the:

  1. Veins.
  2. Arteries.
  3. Lymph vessesls.
  4. Muscles.
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Ans: 1. Veins.

Q2. The arterial wall is thicker than that of veins, due to a comparatively thicker layer of:

  1. Tunica intima.
  2. Tunica media.
  3. Tunica externa.
  4. Pericardium.
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Ans: 2. Tunica media.

Q3. The heart is covered by:

  1. Visceral membrane.
  2. Pleural membrane.
  3. Pericardium.
  4. None of these.
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Ans: 3. Pericardium.

Q4. Agranulocytes responsible for immune healthy individuals one of the following waves is not represented.
The response of the body is

  1. basophils.
  2. neutrophils.
  3. eosinophils.
  4. lymphocytes.
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Ans: 4. lymphocytes.

Explanation:
Lymphocytes are the agranulocytes involved in the immune response of the body.
Two types of lymphocytes are B- and T-lymphocytes. They produce antibodies to destroy microbes and their toxins reject grafts and
kill tumor cells.

Q5. What is true about T-lymphocytes in mammals?

  1. They scavenge damaged cells and cellular debris.
  2. These are produced in thyroid.
  3. There are of three main types-cytotoxic T-cells, helper T-cells and suppressor Tcells.
  4. These originate in lymphoid tissues.
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Ans: 3. There are of three main types-cytotoxic T-cells, helper T-cells and suppressor Tcells.

Q6. Splenic artery arises from:

  1. Anterior mesenteric artery.
  2. Coeliac artery.
  3. Posterior mesenteric artery.
  4. Intestinal artery.
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Ans: 2. Coeliac artery.

Q7. Which of the following substances, if introduce in the blood stream, would cause coagulation, at the site of its
introduction?

  1. Fibrinogen
  2. Fibrinogen
  3. Heparin
  4. Thromboplastin
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Ans: 4. Thromboplastin

Q8. The bicuspid and tricuspid valves close at the start of:

  1. Atrial systole.
  2. Ventricular systole.
  3. Atrial diastole.
  4. Ventricular diastole
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Ans: 2. Ventricular systole.

Q9. ECG depicts the depolarisation and repolarisation processes during the cardiac cycle. In the ECG of a normal
healthy individual one of the following waves is not represented:

  1. Depolarisation of atria.
  2. Repolarisation of atria.
  3. Depolarisation of ventricles.
  4. Repolarisation of ventricles.
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Ans: 2. Repolarisation of atria.
Explanation:
ECG depicts the depolarisation and repolarisation processes during the cardiac cycle. In the ECG of a normal healthy individual
repolarisation of atria is not represented.

Q10. Which of the following statements is true for lymph?

  1. WBC and serum.
  2. All components of blood except RBCs and some proteins.
  3. RBCs, WBCs and plasma.
  4. RBCs, proteins and platelets
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Ans: 2. All components of blood except RBCs and some proteins.

Q11. If you suspect major deficiency of antibodies in a person, to which of the following would you look for
confirmatory evidence?

  1. Serum albumins.
  2. Serum globulins.
  3. Fibrinogen in the plasma.
  4. Haemocytes.
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Ans: 2. Serum globulins.

Q12. Mark the pair of substances among the following which is essential for coagulation of blood:

  1. Heparin and calcium ions.
  2. Calcium ions and platelet factors.
  3. Oxalates and citrates.
  4. Platelet factors and heparin.
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Ans: 2. Calcium ions and platelet factors.

Explanation:

Certain factors called clotting factors released by ‘the tissues at the site of injury initiate coagulation. Calcium ions play a very
important role in clotting. Blood clotting can also be prevented in a test tube by adding a little oxalate or citrate. Oxalate or Citrate
reacts with calcium to form an insoluble compound, so free calcium ions necessary for clotting are not available.

Q13. Cardiac arrest is the state when:

  1. Heart stops beating.
  2. Inadequate blood supply to the heart.
  3. Heart not pumping enough to meet the body needs.
  4. Blood pressure increases.
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Ans: 1. Heart stops beating.
Explanation:
Cardiac arrest occurs when the heart stops beating.

Q14. Which one of the following statements about blood constituents and transport of respiratory gases is most
accurate?

  1. RBCs transport oxygen whereas WBCs transport CO .
  2. RBCs transport oxygen whereas plasma transports only CO .
  3. RBCs as well as WBCs transport both oxygen and CO .
  4. RBCs as well as plasma transport both oxygen and CO .
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Ans: 4. RBCs as well as plasma transport both oxygen and CO .

Q15. Which of the following organisms has an open circulatory system?

  1. Fish.
  2. Frog.
  3. Crocodile.
  4. Hydra.
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Ans: 4. Hydra.

Q16. Arteries are best defined as the vessels which:

  1. Carry blood from one visceral organ to another visceral organ.
  2. Supply oxygenated blood to the different organs.
  3. Carry blood away from the heart to different organs.
  4. Break up into capillaries which reunite to form a vein.
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Ans: 3. Carry blood away from the heart to different organs.

Q17. Antibodies in our body are complex.

  1. Lipoproteins
  2. Steroids
  3. Prostaglandins
  4. Glycoproteins
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Ans: 4. Glycoproteins

Q18. Which artery supplies blood to the heart muscle?

  1. Pulmonary artery.
  2. Systemic artery.
  3. Carotid artery.
  4. Coronary artery.
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Ans: 4. Coronary artery.

Q19. In a standard ECG which one of the following alphabets is the correct representation of the respective activity of
the human heart?

  1. T-end of diastole.
  2. P-depolarisation of the atria.
  3. R-repolarisation of ventricles.
  4. S-start of systole.
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Ans: 2. P-depolarisation of the atria.

Q20. The pattern of contraction and relaxation of the heart is referred to as:

  1. Arterial flow.
  2. Cardiac cycle.
  3. Blood pressure.
  4. Blood flow.
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Ans: 2. Cardiac cycle.

Q21. Which is the last point from where blood goes from the heart to systemic circulation?

  1. Left Ventricle.
  2. Right Ventricle.
  3. Left Auricle.
  4. Right, Auricle.
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Ans: 1. Left Ventricle.

Q22. The valve that guards the opening between right atrium and right ventricle, is called:

  1. Tricuspid valve.
  2. Mitral valve.
  3. Bicuspid valve.
  4. Semilunar valve.
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Ans: 1. Tricuspid valve

Q23. The affinity of CO with Hb is more than oxygen by:

  1. 20 times.
  2. Both.
  3. 2000 times.
  4. None of these.
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Ans: 3. 2000 times.

Q24. Glucose is carried from digestive tract to liver by:

  1. Pulmonary vein.
  2. Hepatic portal vein.
  3. Hepatic artery.
  4. None of the above.
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Ans: 2. Hepatic portal vein.

Q25. What would be the cardiac output of a person having 72 heart beats per minute and a stroke volume of 50mL?

  1. 360mL
  2. 3600mL
  3. 7200mL
  4. 5000mL
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Ans: 2. 3600mL

Explanation:
Cardiac output = Stroke volume × Heart rate = 50 × 72 = 3600mL/ min

Q26. Which is the first point where blood reaches first from systemic circulation?

  1. Right, Auricle.
  2. Left Auricle.
  3. Sinus Venosus.
  4. Right Ventricle.
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Ans: 3. Sinus Venosus.

Q27. Uricotelism is found in:

  1. Frogs and toads.
  2. Birds, reptiles and insects.
  3. Mammals and birds.
  4. Fishes and fresh water protozoans.
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Ans: 4. Fishes and freshwater protozoans.

Q28. A vein possesses a large lumen because:

  1. Tunica media and tunica externa form a single coat.
  2. Tunica interna and tunica media form a single coat.
  3. Tunica interna, tunica media, and tunica externa are thin.
  4. Tunica media is a thin coat.
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Ans: 4. Tunica media is a thin coat.

Q29. An adult human has systolic and diastolic pressures as:

  1. 80mm Hg and 120mm Hg.
  2. 120mm Hg and 80mm Hg.
  3. 50mm Hg and 80mm Hg.
  4. 80mm Hg and 80mm Hg.
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Ans: 2. 120mm Hg and 80mm Hg.

Q30. Your friend has gone for blood test and his haemoglobin count is 17gm per 100ml. What should he do?

  1. No need to worry.
  2. Take rest.
  3. take rest and prescribed medicines.
  4. take rest, and lots of leafy vegetables.
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Ans: 1. No need to worry.

Q31. AIDS is caused by HIV that principally infects.

  1. All lymphocytes.
  2. Activator B-cells.
  3. T4 lymphocytes.
  4. Cytotoxic T-cells.
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Ans: 3. T4 lymphocytes.

Q31. Tricuspid valve is found in between:

  1. Sinus venosus and right auricle.
  2. Right auricle and right ventricle.
  3. Left ventricle and left auricle.
  4. Ventricle and aorta.
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Ans: 2. Right auricle and right ventricle.

Q32. Which of the following proteins is involved in blood clotting?

  1. Globulin.
  2. Albumin.
  3. Fibrinogen.
  4. Bilirubin.
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Ans: 3. Fibrinogen.

Q33. Arteries carry oxygenated blood except.

  1. Pulmonary
  2. Cardiac
  3. Hepatic
  4. Systemic
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Ans: 1. Pulmonary

Q34. Artificial pace maker is transplanted in:

  1. Inter auricular septum.
  2. Below the collar bone.
  3. Inter ventricular septum.
  4. Right auricle.
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Ans: 2. Below the collar bone.

Q35. Identify the correct statement:

  1. All arteries carry oxygenated blood from the heart.
  2. All veins carry oxygenated blood from the heart.
  3. All arteries carry oxygenated blood.
  4. All veins carry deoxygenated blood.
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Ans: 1. All arteries carry oxygenated blood from the heart.

Q36. Heparin is:

  1. Anti-allergic.
  2. Blood diluter.
  3. Anticoagulant.
  4. Antiseptic.
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Ans: 3. Anticoagulant

Q37. What is the percentage of eosinophils in a healthy human?

  1. 1-2%
  2. 2-3%
  3. 3-4%
  4. 4-5%
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Q38. How much blood is pumped by the human heart in a minute?

  1. 4 litres.
  2. 5 litres.
  3. 6 litres.
  4. 7 litres.
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Ans: 2. 5 litres.

Q39. The lymph serves to:

  1. Transport oxygen to the brain.
  2. Transport carbon dioxide to the lungs.
  3. Return the interstitial fluid to the blood.
  4. Return the WBCs and RBCs to the lymph nodes.
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Ans: 3. Return the interstitial fluid to the blood.

Q40. In humans, blood passes from the post caval to the diastolic right atrium of heart due to:

  1. Pushing open of the venous valves.
  2. Suction pull.
  3. Stimulation of the sino auricular node.
  4. Pressure difference between the post caval and atrium.
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Ans: 4. Pressure difference between the post caval and atrium.