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
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: The Hering-Breuer inflation reflex, named for Josef Breuer and Ewald Hering, is a reflex triggered to prevent over-inflation of the lung. Pulmonary stretch receptors present on the wall of bronchi and bronchioles of the airways respond to excessive stretching of the lung during large inspirations. Ref: guyton and hall textbook of medical physiology 12 edition page number:365,366,367