Question

multiple choice question
the extrinsic and intrinsic pathways of blood clotting differ only in how they arrive at which factor?

factor v

factor vii

factor iii

factor x

Explanation:

In blood clotting, the extrinsic and intrinsic pathways converge at Factor X (prothrombinase complex formation). The extrinsic pathway is triggered by tissue factor (Factor III) and leads to Factor X activation, while the intrinsic pathway involves a series of factors (like XII, XI, IX, VIII) also leading to Factor X activation. The other factors (V, VII, III) are not the common convergence point.

Answer:

Factor X (the option with "Factor X")