<prompt> All of the following statements about bronchial circulation are true, except :Contribute 2 of systemic circulationContribute to gaseous exchangeCause venous admixing of bloodProvide nutritive function to lung  <response>: Bronchial circulation does not contribute to gas exchange. Ref: The Mechanics of the Circulation By C. G. Caro, T. J. Pedley, R. C. Schroter, W. A. Seed, K. H. Parker, Page 475; Equine Respiratory Medicine and Surgery By Bruce C. McGorum, Padraic M. Dixon, N. Edward Robinson, Page 34; Medical Physiology : Principles for Clinical Medicine By Rodney Rhoades, David R. Bell, Page 371. 