Haemostasis

Question 1

Define haemostasis

Answer 1

Arrest or stoppage of bleeding

Question 2

Initiation of haemostasis

Answer 2

Injury of blood vessel

Question 3

3 stages

Answer 3

1,vasoconstriction
2,formation of platelet plug
3,coagulation of blood

Question 4

Injury of the blood vessel is followed by

Answer 4

Damage of endothelium

Question 5

Adherence of platelets to the exposed collagen is accelerated by

Answer 5

Von willbrand factor

Question 6

ADP and thromboxane A2 are secreted by

Answer 6

Platelets attached to collagen during coating

Question 7

Platelet plug or temporary plug is formed by

Answer 7

Aggregation of platelets

Question 8

Platelet aggregation accelerated by

Answer 8

PAF (platelet activating factor)

Question 9

Which blocks the ruptered part of blood vessel and prevent further blood loss

Answer 9

Fibrin thread attached to platelet plug

Question 10

Vasoconstriction occurred by

Answer 10

Secretion of serotonin

Question 11

Formation of prothrombin activator finally leads to

Answer 11

Blood clotting