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

Which of the following is not required for the formation of a blood clot?Multiple ChoiceFibrinogenVitamin KCalciumAlbumin

Which of the following are required for blood to clot?Multiple select question.White blood cellsPlateletsAntibodiesClotting factorsCytokines

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

Name two substances that function to dissolve blood clots.Multiple ChoiceTissue plasminogen activator and streptokinaseCalcium ions and fibrinogenThrombus and embolusProthrombin activator and vitamin K

Which is not an active, direct part of a clot?Multiple choice question.Plasma factorsFibrinogenPlatelets