haemostasis Flashcards

(5 cards)

1
Q

what is haemostasis?

A

stopping bleeding while maintaining blood flow

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2
Q

what are the phases of haemostasis?

A

vessel constriction
primary haemostasis (platelet plug formation)
secondary haemostasis (coagulation)

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3
Q

what happens in platelet plug formation?

A

platelets adhere to collagen, platelets activate chemicals that recruit more platelets, platelets aggregate to form barrier

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4
Q

what happens in coagulation?

A

intrinsic (activated by vessel wall damage) and extrinsic pathway (initiated by tissue factor)

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5
Q

both pathways converge into the common pathway which results in…

A

Activation of Factor X to Xa

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