Factor IX is involved with which clotting pathway?

Question

Quizplus · Accepted Answer

Factor IX is also known as Christmas factor and is an essential component of the intrinsic coagulation pathway. The intrinsic pathway is activated by collagen exposure or subendothelial cells in the blood vessel wall. Factor IX is activated by factor XIa, which is produced by the activation of factor XII. Once activated, factor IX combines with its cofactor, factor VIIIa, to activate factor X and subsequently lead to the formation of a fibrin clot. Therefore, the correct answer is A) Intrinsic.

Factor IX Is Involved with Which Clotting Pathway