Platelet adhesion to collagen occurs :: (A) Factor VIII, (B) Factor IX, (C) von Willebrand factor, (D) Fibronectin
Answer is C. Platelet adhesion to collagen occurs von-Willebrand factor)Endothelial injury allows platelets to contact the underlying extracellular matrix; subsequent adhesion occurs through interactions with von Willebrand factor (vWF), which is a product of normal endothelial cells and an essential cofactor for platelet binding to matrix elements.