<prompt> Virchows triad includes all exceptVessel wall endothelial injuryThrombus formationLocal blood stasisIntimal tear  <response>: Ans. d Intimal tear. Ref. Robbin, Pathologic Basis of Disease, 6th ed., 124Three primary influences predispose to thrombus formation, the so-called Virchows triad; Endothelial injury single most vital factor Stasis or turbulence of blood flow Blood hypercoagulability 