Homeostasis Flashcards
1
Q
Homeostasis
A
Arrest of bleeding
Maintain blood in fluid state
2
Q
Homeostasis types
A
1° platelet plug
2° clot by fibrin….definitive homeo
Fibrinolysis-dissolve clot
3
Q
Homeo steps
A
Vasoconstriction
Plug formation
Blood coagulation
4
Q
Vasoconstriction
A
Contraction of vacular smooth muscle wall
Dec blood loss
Stretch induced responce–mech resp
Sertonin by plate maintains it
5
Q
Temporary homeso Plug formation
A
Adhesion–change shape. Inc surface. area
Aggregation–stick to each other
Release reaction-sertonin…cycle
6
Q
Blood coagulation
A
Clot around plug–stable
2°
Initiated be vessel injury–rel tissue factors and expose collagen of wall
