Q. No.All the following statements regarding coagulation of blood are correct except:
1. Prothrombinase catalyzes the breakdown of prothrombin to thrombin.
2. Thrombin catalyzes the conversion of fibrinogen to fibrin.
3. Antithrombin inactivates thrombin.
4. Heparin causes fibrinolysis.
1. Prothrombinase catalyzes the breakdown of prothrombin to thrombin.
2. Thrombin catalyzes the conversion of fibrinogen to fibrin.
3. Antithrombin inactivates thrombin.
4. Heparin causes fibrinolysis.
Identify a very important thrombolytic amongst the following:
1. warfarin
2. heparin
3. oxalates and citrates
4. t-PA
Which of these statements about the ABO blood group is NOT true?
| 1. | A person with type O blood can donate blood to individuals with type A, B, AB, or O blood types. |
| 2. | Transfusions should be made considering the plasma of the donor and the erythrocytes of the patient (recipient). |
| 3. | A person with type A blood should not receive a transfusion from someone with type AB blood. |
| 4. | A person with type O blood has both the A and B antigens. |
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The agglutinogens [antigens] and the agglutinins [antibodies] for the ABO blood group are found respectively:
1. on the erythrocytes, on the leukocytes
2. on the erythrocytes, in the plasma
3. on the leukocytes, in the plasma
4. in the plasma, on the erythrocytes
What is true regarding blood transfusion and compatibility?
1. A-negative blood can probably be safely donated to a person with A-positive blood.
2. Antibodies against the Rh antigen do not develop unless an Rh-positive person is exposed to Rh-negative blood.
3. The largest percentage of people in India are Rh-negative.
4. Rh-negative mothers cannot have an Rh-positive baby.
The colloid osmotic pressure in the blood is mainly due to:
1. albumin
2. glucose
3. RBCs
4. globulins
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All the following anticoagulants are found in the blood except:
1. ethylenediamenetetraacetic acid (EDTA).
2. antithrombin
3. heparin
4. prostacyclin
RhoGAM injection [one brand of Rh immunoglobulin] is given to Rh-negative mothers to:
1. initiate the synthesis of anti-Rh antibodies in the mother.
2. initiate anti-Rh antibody production in the fetus.
3. prevent the mother from producing anti-Rh antibodies.
4. prevent the fetus from producing anti-Rh antibodies.
Which statement concerning blood viscosity is correct?
1. The viscosity of blood is less than the viscosity of water.
2. Blood viscosity is due to the presence of the plasma proteins and erythrocytes.
3. The higher the blood viscosity the easier the heart has to work to move blood through the vessels.
4. Anemia increases blood viscosity.
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