Is it true that platelets aggulatinate or clump together whenever blood is damaged?

Yes, platelets do agglutinate or clump together when blood vessels are damaged. This process is part of hemostasis, where platelets adhere to the site of injury and to each other, forming a temporary plug to help stop bleeding. The activation of platelets is triggered by exposure to collagen and other substances in the damaged tissue, promoting further aggregation and clot formation.