What is the primary role of von Willebrand factor in the context of blood coagulation?

A To activate platelets and promote adhesion to the site of injury ✓
B To inhibit the activation of factor X and prevent coagulation
C To dissolve blood clots and prevent thrombosis
D To regulate the levels of calcium ions in the blood

Explanation

Von Willebrand factor plays a crucial role in the activation and adhesion of platelets to the site of injury, facilitating the formation of a platelet plug and initiating the coagulation cascade.

Source

Guyton and Hall Textbook of Medical Physiology
Hematology Hematology: Blood Components Hematology: Blood Components Medium MEDICAL Confidence: high