<prompt> During Flight or Fight reaction, which of the following is responsible for increase in local blood flowSympathetic system mediated cholinergic releaseLocal hormonesPara-sympthetic cholinergicEndocrine factors only  <response>: Main actions of sympathetic system, when activated, are mediated through noradrenaline. But the local blood flow is increased due to release of acetylcholine at sympathetic cholinergic endings. 