HAEMOSTASIS Flashcards
WHAT ARE THE THREE STEPS OF HAEMOSTASIS
VASCULAR SPASM
PLATELET PLUG FORMATION
COAGULATION
WHAT IS HAEMOSTASIS
A FAST SERIES OF REACTIONS FOR STOPPAGE OF BLEEDING
WHAT IS INVOLVED IN TEH VASCULAR SPASM OF HAEMOSTASIS
SMOOTH MUSCLE CONTRACTS CAUSING VASOCONSTRICTION
WHAT IS INVOLVED IN TH EPLATELET PLUG FORMATION OF HAEMOSTASIS
INJURY OF LINING EXPOSES COLLAGEN FIBRES AND PLATELETS ADHERE
PLATLETS RELEASE CHAMICALS THAT MAKE THEM STICKY TO FORM A PLATELET PLUG
WHAT IS INVOLVED IN COAGULATION OF HAEMOSTASIS
FIBRIN FORMS A MESH THAT TRAPS RBC’s FORMING THE CLOT
VASCULAR SPASM IS MOST EFFECTIVE IN ____ BLOOD VESSELS
SMALL
WHAT FACTOR HELPS TO STABILISE PLATELET-COLLEGEN ADHESION
VON WILLEBRAND FACTOR
WHAT TWO MOLECULES ENHANCE VASCULAR SPASM AND PLATELET AGGREGATION
SEROTONIN
THROMBOXANE A2
BLOOD CLOTS ARE EFFECTIVE IN SEALING ____ BLOOD VESSELS
LARGE
WHAT TYPE OF INJURY CAUSES THE INTRINSIC PATHWAY CASCADE IN COAGULATION
INJURY FROM WITHIN THE BLOOD VESSEL
WHAT TYPE ON INJURY CAUSES THE EXTRINSIC PATHWAY CASCADE IN COAGULATION
INJURY TO TISSUES SURROUNDING THE VESSEL
IS TEH EXTRINSIC OR INTRINSIC PATHWAY OF COAGULATION FASTER
EXTRINSIC = BYPASSES SEVERAL STEPS
WHAT MOLECULE COVERTS PROTHROMBIN TO THROMBIN
BROTHROMBINASE
WHAT CONVERTS FINRINOGEN TO FIBRIN
THROMBIN
_____ STRANDS FORM THE STRUCTURAL BASIS OF A CLOT
FIBRIN
