Question

According to the cascade theory of Macferlane, thirteen clotting factors are required for blood clotting. Which of the following factor is also called Christmas factor? 1) Plasma thromboplastin component (PTC) or Antihaemophilic factor B 2) Plasma Thromboplastin Antecedent (PTA) or Antihaemophilic factor C 3) Antibaemophilic factor (AHF) or Antihaemophilic factor A 4) Fibrinogen

Answer 1

Answer:

The 'Christmas factor' is a protein whose deficiency was first discovered in the 1950s in a little boy by the name of Stephen Christmas. Also known as factor IX, or FIX, it is involved in blood clotting and its deficiency causes the rare form of congenital male hemophilia: hemophilia