<prompt> Vasodilation in acute inflammation is first shown byVenulesArteriolesCapillariesVein  <response>: Ans. b ArteriolesRef: Robbins 9thpg 74; 8thpg 47Vasodilation first involves the arterioles and then leads to opening of new capillary beds in the area.The result is increased blood flow, which is the cause of heat and redness erythema at the site of inflammation. 