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4045574
Hemostasis
Description
The blood
No tags specified
biology
the blood
hemostasis
Mind Map by
Anano Ridlington
, updated more than 1 year ago
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Created by
Anano Ridlington
about 9 years ago
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Resource summary
Hemostasis
Blood vessel ruptures
1).Vascular spasm
The smooth muscle layer constricts
2).Platelet plug formation
Platelets attach to exposed collagen fibres
Release substances that promotes platelet aggregation
Coagulation
The intrinsic mechanism
Initiated by contact with exposed the exposed collagen
Activated simultaneously
Prothrombin activator is formed
Converted into thrombin
Forms long threads of fibrin
Surrounds the platelets and creates the framework
RBC become trapped in the framework
Platelets contract and clot retracts
Blood vessel repairs
Plasmin destroys fibrin network
Fluidity of the plasma is restored
The extrinsic mechanism
Damaged tissue releases tissue thromboplastin and activates this mechanism
Both mechanisms are activated simultaneously
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