What is the primary function of von Willebrand factor in blood?

A To regulate blood pressure
B To facilitate platelet adhesion to damaged endothelium ✓
C To stimulate erythropoiesis
D To inhibit the complement system

Explanation

Von Willebrand factor plays a crucial role in the initiation of hemostasis by facilitating platelet adhesion to damaged endothelium.

Source

Robbins and Cotran Pathologic Basis of Disease
Hematology Hematology: Blood Components Hematology: Blood Components Medium MEDICAL Confidence: high