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
Hering Breuer reflex is an increase in- 
Select and explain. 
A. Duration of inspiration, B. Duration of expiration, C. Depth of inspiration, D. Depth of expiration
B: Duration of expiration
Answer: B: Duration of expiration 
Explanation: Ans. (b) Duration of expiration(Ref: Ganong, 25th ed/p.658)Hering-Breuer inflation reflex response consists of,#Slowing of respiratory frequency#Increase in duration of expiration#Bronchodilation#Increased heart rate#Slight vasoconstriction