Answer
c. factor X
Work Step by Step
Factor X is the first clotting factor that the intrinsic and extrinsic pathways have in common. (see figure 18.22). Factor X combines with factor V to form the prothrombin activator.
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.