Substances

Question 1

1. Inhibits platelet activation and stimulates vasodilation
   - hemostatic role
2. coats the endothelial cell surface and weakly enhances activity of anithrombin III
   - hemostatic role

Answer 1

1. Prostacyclin
   - anticoagulant
2. Heparin sulfate
   - anticoagulant

Question 2

1. Endothelial surface receptor for thrombin (binds and inactivated thrombin)
   - hemostatic role
2. converts plasminogen to plasminogen
   - hemostatic role
3. Enhances anticoagulant and fibrinolytic action of protein c

Answer 2

1. Thrombomodulin
   - anticoagulant and fibrinolytic
2. Tissue plasminogen activator
   - fibrinolytic
3. Thrombomodulin

Question 3

stimulates vasodilation
hemostatic role

Answer 3

Adenosine
Reduces blood flow rate