Question

which of the following clotting factors are vitamin k dependent?
a) ii, iv, viii, x
b) ii, iii, v, x
c) ii, vii, ix, x
d) ii, vii, x, xi

Explanation:

Vitamin K is essential for the synthesis of clotting factors. Factors II (prothrombin), VII, IX, and X are vitamin K - dependent. Factor IV is calcium, not related to vitamin K. Factor III is tissue factor, factor V is labile factor (not vitamin K - dependent), factor XI is plasma thromboplastin antecedent (not vitamin K - dependent).

Answer:

C. II, VII, IX, X