This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Physiology
Herring 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. is 'b' i.e., Duration of expirationThe Hering-Breuer inflation reflex is an increase in the duration of expiration produced by steady lung inflation, and the Hering-Breuer deflation reflex is a decrease in the duration of expiration produced by marked deflation of the lung.