Question

role of vitamin k in coagulation

Answer 1

Vitamin K is a necessary participant in synthesis of several proteins that mediate both coagulation and anticoagulation. Vitamin K deficiency is manifest as a tendency to bleed excessively. Indeed, many commercially-available rodent poisons are compounds that interfere with vitamin K and kill by inducing lethal hemorrhage

Answer 2

lack of vitamin c which clinically is the basic defect of scurvy, does not appear to cause a defect in blood coagulation