Hema 2 Laboratory Quiz 2

Which disorder is characterized by prolonged clotting due to Factor VIII deficiency?

• Hemophilia A

• Hemophilia B

• von Willebrand disease

• Bernard-Soulier syndrome

Which laboratory test is used to evaluate platelet function?

• Prothrombin time (PT)

• Activated partial thromboplastin time (APTT)

• Bleeding time

• D-dimer test

Which condition is characterized by excessive platelet destruction and widespread clotting?

• Hemophilia

• Thrombocytopenia

• Disseminated intravascular coagulation (DIC)

• Essential thrombocythemia

Aspirin inhibits platelet function by blocking which enzyme?

• Thromboxane A2 synthase

• Cyclooxygenase (COX-1)

• Plasminogen activator

• Factor XIII

Which anticoagulant inhibits vitamin K-dependent clotting factors?

• Heparin

• Warfarin

• Aspirin

• Thrombin

What is the final result of the coagulation process?

• Platelet adhesion

• Vasoconstriction

• Formation of a fibrin clot

• Breakdown of clotting factors

Which of the following coagulation factors is NOT essential for clot formation?

• Factor XII

• Factor VIII

• Factor II

• Factor X

Which component is required for the conversion of fibrinogen into fibrin?

• Thrombin

• Plasmin

• Prothrombin

• Heparin

What is the function of thromboplastin in blood coagulation?

• Converts fibrinogen to fibrin

• Converts prothrombin to thrombin

• Activates plasminogen

• Binds calcium ions

Which coagulation factor is also known as fibrinogen?

• Factor I

• Factor II

• Factor V

• Factor X