What is the function of antithrombin found in the blood and on the cells lining blood vessels?Multiple ChoiceTo convert fibrinogen to fibrinTo prevent unwanted clot formationTo digest fibrin threadsTo help adhere platelets to exposed collagen fibers

What step is critical to the formation of a blood clot?Multiple ChoiceBinding of antibody to surface of plateletsConversion of prothrombin to thrombinConversion of fibrin to fibrinogenActivation of vitamin K

The damaged tissue and platelets stimulate the conversion of the protein fibrinogen into insoluble threads. These threads form a to trap the cells, stopping excessive loss of and preventing pathogens from the bloodstream.

How does heparin prevent the clotting of blood?Multiple ChoiceBy binding to calcium ionsBy depleting the blood of plateletsBy inhibiting the formation of prothrombin activator and the action of thrombin on fibrinogenBy interfering with the formation of thrombin and fibrinogen

During blood clotting, which enzyme converts fibrinogen to fibrin?Multiple choice question.PlasminTrypsinPlavixThrombin

Assertion: Fibrins are produced by the conversion of inactive fibrinogens in the plasma, in the presence ofenzyme thrombin.Reason: Plasma without fibrinogen and blood corpuscles is called serum