Q. No.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.
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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A deficiency of plasma proteins would lead to all of the following except:
1. reduced ability to transport iron
2. reduced ability to transport oxygen
3. reduced ability to clot
4. reduced ability to transport molecules such as lipids
The mature human RBCs are biconcave disc shaped. What is the advantage of such a shape?
1. It facilitates oxygen uptake and delivery.
2. It allows the cells to hold more hemoglobin.
3. It gives more room for the nucleus and organelles.
4. It keeps them from leaking out through the walls of capillaries.
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When the red blood cells get near the end of their life span they:
1. are less likely to become damaged
2. become more fragile
3. are less likely to rupture
4. are less likely to be phagocytized in the spleen or liver
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