Blood: Composition, Grouping and Coagulation
Blood: Composition, Grouping and Coagulation: Overview
This topic highlights the composition of blood and explains the phenomenon of coagulation. It discusses the formed elements in the blood, which are erythrocytes, leucocytes and thrombocytes. It also explains the blood groups and their types.
Important Questions on Blood: Composition, Grouping and Coagulation
A person with blood group A requires blood. The blood group which can be given is
The most popularly known blood grouping is the ABO grouping. It is named ABO and not ABC, because “O” in it refers to having:
In the ABO system of blood groups, if both antigens are present but no antibody, the blood group of the individual would be
Blood group AB has
Blood group AB can be donated to any blood group type.
If a person had an accident with a loss of heavy blood, which blood group will you advise for transfusion if his blood group is unknown.
The fatal condition "Erythroblastosis foetalis" can be prevented if blood group compatibility is checked before marriage.
Is it advisable to match the blood groups before marriage? If yes, give reason.
Study the following statements and identify the wrong ones
A) The alleles for Rh antigen are located on different loci on chromosome 9.
B) Three alleles of a single gene express ABO blood types in man.
C) The erythroblastosis foetalis is caused due to IgM type antibodies.
D) Isoagglutinogens are glycolipids.
Study the following table and pick up the correct combinations.
| SNo | Clotting | Name of the factor | Function |
| I | XII | Hageman factor | Activates cascade reactions of intrinsic pathway |
| II | XIII | Fibrin stabilising factor | Stabilises and strengthens the clot |
| III | III | Prothrombin | Prevents clotting of blood |
| IV | I | Fibrinogen | Forms serum on the blood clot |
Which of the following is an anticoagulant and checks blood coagulation in blood vessels?
Which of the following prevents the conversion of prothrombin in an undamaged blood vessel?
Which of the following is not useful in blood clotting.
The four blood groups in humans are
Write a note on coagulation of blood.
Explain ABO blood groups.
In which animal Rh factor was first discovered, whether Rhesus monkey or Rhesus ape?
What is Rh factor?
Explain Erythroblastosis fetalis.
What is the percentage of Rh-positive people in the world, whether it is 85 or 55?
