The role of vitamin K in hemostasis is to: Promote contact factor activation Facilitate calcium binding to essential factors Initiate extrinsic pathway activation Cross-link the fibrin monomers
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Step 1: Vitamin K is essential for the synthesis of several clotting factors, including prothrombin (factor II), factor VII, factor IX, and factor X. Show more…
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Vitamin K is necessary for normal blood coagulation because of which of the following? A) It complexes with platelets in the first wave of platelet aggregation B) It induces the release of von Willebrand factor C) It inhibits the activation of the fibrinolytic system D) It initiates the contact phase by activating factor XI (plasma thromboplastin) E) It is a required cofactor for the carboxylation of protein.
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During the process of blood coagulation, vitamin $K$ heips in (a) the formation of thromboplastin (b) the conversion of fibrinogen to fibrin (c) the conversion of prothrombin to thrombin (d) the formation of prothrombin.
Blood clotting results from a cascade of zymogen activation: Factor X synthesis, like prothrombin, needs vitamin K. They both have a similar N-terminus. Unlike prothrombin, factor X retains this region. Answer the following question. You will need to use sources beyond the textbook and lecture. This assignment will be graded.
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