blood clotting Flashcards
(26 cards)
What is the primary function of blood clotting?
To prevent excessive bleeding when a blood vessel is injured.
True or False: Blood clotting is solely reliant on platelets.
False
Fill in the blank: The process of blood clotting is also known as __________.
hemostasis
What are the three main stages of hemostasis?
Vascular spasm, platelet plug formation, and coagulation.
Which type of blood cell is primarily involved in the clotting process?
Platelets
What is the role of fibrin in blood clotting?
Fibrin forms a mesh that stabilizes the platelet plug.
True or False: Coagulation factors are proteins that play a critical role in the clotting process.
True
What is the name of the cascade that leads to the formation of a blood clot?
Coagulation cascade
Which vitamin is essential for the synthesis of certain clotting factors?
Vitamin K
What is the function of thrombin in the clotting process?
Thrombin converts fibrinogen into fibrin.
Multiple Choice: Which of the following is NOT a step in hemostasis? A) Vascular spasm B) Platelet aggregation C) Hemoglobin synthesis
C) Hemoglobin synthesis
What do you call the condition where blood clots form inappropriately within blood vessels?
Thrombosis
Fill in the blank: __________ is the natural process of removing a blood clot after healing.
Fibrinolysis
Name one common anticoagulant medication.
Warfarin
True or False: Anticoagulants promote blood clotting.
False
What is the role of von Willebrand factor in blood clotting?
It helps platelets adhere to the site of vascular injury.
What is the function of the intrinsic pathway in coagulation?
It is activated by damage to the blood vessel and leads to the activation of clotting factors.
What triggers the extrinsic pathway of coagulation?
Tissue factor released from damaged tissues.
Multiple Choice: Which of the following is a symptom of excessive clotting? A) Bruising B) Hemophilia C) Thrombocytopenia
A) Bruising
What is a common test used to evaluate blood clotting ability?
PT/INR (Prothrombin Time/International Normalized Ratio)
Fill in the blank: The __________ pathway is faster and is triggered by external trauma.
extrinsic
What is the primary site of clot formation in the body?
The blood vessel injury site.
True or False: Clotting factors are usually present in an inactive form in the bloodstream.
True
