Hemostasis Quiz

The first stage of wound healing is hemostasis.

Hemostasis is the process to prevent and stop bleeding, meaning to keep blood within a damaged blood vessel.

Intact blood vessels moderate blood's tendency to form clots through the endothelial cells, which prevent blood clotting with a heparin-like molecule and thrombomodulin, and prevent platelet aggregation with nitric oxide and prostacyclin.

<p>The three major steps involved in hemostasis are vasoconstriction, temporary blockage of a hole in a damaged blood vessel by a platelet plug, and blood coagulation (formation of fibrin clots).</p> Signup and view all the answers

<p>When the endothelium of a blood vessel is damaged, the endothelial cells stop secretion of coagulation and aggregation inhibitors and instead secrete von Willebrand factor, which initiates the maintenance of hemostasis after injury.</p> Signup and view all the answers