Platelets and Clotting Disorders Practice Questions
20 free Platelets and Clotting Disorders practice questions for the Physiology, each with the correct answer and a detailed explanation. Open any question below, or take the full set as an interactive quiz.
Questions
20 questions
All Platelets and Clotting Disorders questions
- Q1. Platelets are primarily derived from which bone marrow cell?
- Q2. The normal platelet count in adult human blood is approximately:
- Q3. Which substance released from platelets promotes vasoconstriction at the site of injury?
- Q4. Platelet adhesion to damaged endothelium is primarily mediated by:
- Q5. Which platelet receptor is responsible for binding fibrinogen during platelet aggregation?
- Q6. Which vitamin is essential for the synthesis of several clotting factors?
- Q7. The intrinsic pathway of coagulation is initiated by activation of:
- Q8. Which laboratory test primarily evaluates the extrinsic pathway of coagulation?
- Q9. Hemophilia A is caused by deficiency of which clotting factor?
- Q10. Which clotting disorder is characterized by a prolonged bleeding time with a normal platelet count?
- Q11. The primary function of fibrin in hemostasis is to:
- Q12. Which enzyme converts fibrinogen into fibrin?
- Q13. Thrombocytopenia is defined as:
- Q14. Which anticoagulant acts by enhancing the activity of antithrombin III?
- Q15. Disseminated intravascular coagulation is characterized by:
- Q16. Which substance released by endothelial cells inhibits platelet aggregation?
- Q17. Bleeding time primarily assesses the function of:
- Q18. Which drug inhibits platelet aggregation by blocking thromboxane A2 synthesis?
- Q19. Which clotting factor links the intrinsic and extrinsic pathways to the common pathway?
- Q20. Which condition is most likely associated with prolonged aPTT but normal prothrombin time?