blood clotting Flashcards
1
Q
what is the benefits of blood clotting on broken skin
A
- keeps pathogens out
- reduces blood loss
2
Q
what is blood clotting called
A
thrombosis
3
Q
what happens to begin the blood clotting cascade
A
platelets are activated
4
Q
why does the blood clotting cascade involve alot of steps
A
to make sure that the process happens at exactly the right time
5
Q
what clotting factors are used
A
factor 8 and 42
6
Q
process of thrombosis
A
- blood vessel is damaged
- releases thromboplastin
- the platelets get sticky and clump together
- the thromboplastin works with calcium ions, clotting factors viii and xa, and vitamin K and converts prothrombin to thrombin
- the thrombin enzyme catalyses the reaction between fibrinogen to fibrin
- the fibrin forms a mesh structure that traps red blood cells and makes a blood clot
7
Q
what is prothrombin
and what is it converted to
A
prothrombin to thrombin
plasma protein to an enzyme
8
Q
what is fibrinogen and what is it converted to
A
fibrinogen to fibrin
a soluble plasma protein to a mesh insoluble fibres
