What is the first step in coagulation that occurs after vascular trauma?

Question

Quizplus · Accepted Answer

The first step in coagulation after vascular trauma is vasoconstriction at the site of injury. The damaged endothelium releases chemical signals that cause smooth muscle cells in the walls of the vessel to contract, narrowing the vessel and reducing blood flow to the area. This helps to limit bleeding and provides time for other steps in coagulation to occur.

What Is the First Step in Coagulation That Occurs After