Primary Hemostasis – The Vascular System

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The page below is a sample from the LabCE course Fundamentals of Hemostasis. Access the complete course and earn ASCLS P.A.C.E.-approved continuing education credits by subscribing online.

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Primary Hemostasis – The Vascular System

Our blood circulates freely through undamaged, intact vessels.

The design of the vasculature, or blood vessels, is such that the walls of the vessels are chemically inert to both coagulation factors and platelets under normal conditions.
Damage to a vessel breaks that inert endothelial cell lining, exposing the subendothelium and collagen, and releasing chemical signals that trigger subsequent hemostatic mechanisms.