<prompt> A middle aged man presented with blood in the sputum. Aery responsible for bleeding in hemoptysis is?Bronchial aeryPulmonary aeryIntersegmental aeryIntercostal collaterals  <response>: Aeriographic studies in patients with active hemoptysis have shown that the systemic circulation bronchial aeries is primarily responsible for the bleeding in approximately 92 of cases. The bronchial aeries, which originate either from the aoa or from intercostal aeries and are therefore pa of the high-pressure systemic circulation, are the source of bleeding in bronchitis or bronchiectasis or with endobronchial tumors. Ref: Irwin and Rippes Intensive Care Medicine edited by Richard S. Irwin, James M. Rippe, 2008, Page 589 ; Harrisons 17th ed table 34-1 