Ophthalmology Interview Question:

The following are true about blood coagulation:

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* a) Heparin inhibits blood coagulation through its interference with vitamin K metabolism in the liver
* b) Addition of vitamin K to freshly drawn blood delays clotting
* c) Thrombin converts fibrinogen to fibrin
* d) Platelets are essential for blood clot
* e) Vitamin K is responsible for the production of factors II, VII, IX and X

Answer a. F b. F c. T d. T e. T
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