MICROANATOMY

Detailed explanation-1: -1) Constriction of the blood vessel. 2) Formation of a temporary “platelet plug.” 3) Activation of the coagulation cascade.

Detailed explanation-2: -Haemostasis is the physiological process by which bleeding ceases. Haemostasis involves three basic steps: vascular spasm, the formation of a platelet plug, and coagulation, by which clotting factors promote the formation of a fibrin clot. Fibrinolysis is the process in which a clot is degraded in a healing vessel.

Detailed explanation-3: -Platelet plug formation. The platelet plug formation is the second step of hemostasis. It occurs after vasoconstriction. During the process, platelets begin to accumulate, or aggregate, on the damaged vessel wall.

Detailed explanation-4: -During hemostasis, a brief spasm of vasoconstriction occurs, which slows blood flow into the injured area while the clot forms. Vasoconstriction during hemostasis: Blood vessel experiencing vasoconstriction as its smooth muscle contracts while the blood clot forms.