Medical MCQ-Factor Xa is necessary for conversion of prothrombin to thrombin

Factor Xa is necessary for conversion of prothrombin to thrombin

Only in the extrinsic pathway

Only in the intrinsic pathway

As part of both extrinsic and intrinsic pathways

Only if the normal blood clotting cascade is inhibited

Question Category:

Pathology

Correct Answer:

As part of both extrinsic and intrinsic pathways

Description:

Ans. (c) As part of both extrinsic and intrinsic pathways(Ref: Robbins 9th/pg 118-119; 8th/pg 119)Activated factor IX along with factor VIIIa (Intrinsic pathway) & factor VIIa (extrinsic pathway), converge to activate Factor X to Xa is necessary for conversion of prothrombin to thrombin (common pathway)

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