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Flashcards in Factors Deck (12)
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1
Q

Factor I - Fibrinogen

A

Source: Liver

Common pathway; converted to fibrin (insoluble weblike substance of clot)

2
Q

Factor II - Prothrombin

A

Source: Liver (synthesis requires vit.K)

Common pathway; converted to thrombin (converts fibrinogen to fibrin)

3
Q

Factor III - Tissue Factor

A

Source: Tissue cells

Activates extrinsic pathway

4
Q

Factor IV - Calcium ions

A

Source: Plasma

Needed for essentially all stages of coagulation process; always present

5
Q

Factor V - Proaccelerin

A

Source: Liver, platelets

Common pathway

6
Q

Factor VII - Proconvertin

A

Source: Liver (synthesis requires vit.K)

Both extrinsic and intrinsic pathways

7
Q

Factor VIII - Antihemophilic factor (AHF)

A

Source: Liver, lung capillaries

Intrinsic pathway; deficiency results in haemophilia A

8
Q

Factor IX - Plasma thromboplastin component (PTC)

A

Source: Liver (synthesis requires vit.K)

Intrinsic pathway; deficiency results in hemophilia B

9
Q

Factor X - Stuart factor

A

Source: Liver (synthesis requires vit.K)

Common pathway

10
Q

Factor XI - Plasma thromboplastin antecedent (PTA)

A

Source: Liver

Intrinsic pathway; deficiency results in hemophilia C

11
Q

Factor XII - Hageman factor

A

Source: Liver

Intrinsic pathway; activates plasmin: initiates clotting in vitro; activation initiates inflammation

12
Q

Factor XIII - Fibrin stabilising factor (FSF)

A

Source: Liver, bone marrow

Cross-links, forming a strong, stable clot