<prompt> The affinity of oxygen for Hb increased with fall in pH. This is called as ?Bain-Bridge effectBohr effectHaldane effectHerring effect  <response>: Loading of CO2 causing unloading of 2 at tissue level is called Haldane effect. Herring Breur reflex is the prolongation of duration of expiration after increased inflation. This protects the lung from hyperinflation. 