This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Respiratory system, Subject name: Physiology
The affinity of oxygen for Hb increased with fall in pH. This is called as 
Select and explain. 
A. Bain-Bridge effect, B. Bohr effect, C. Haldane effect, D. Herring effect
B: Bohr effect
Answer: B: Bohr effect 
Explanation: Increase in basal low hea rate on infusing saline is called Bain Bridge effect. Loading of CO2 causing unloading of O2 at tissue level is called Haldane effect. Herring Breuer reflex is the prolongation of the duration of expiration after increased inflation. This protects the lung from hyperinflation.