Question

Hering-Breuer reflex is related to

• A. Effect of pH on respiratory center
• B. Effect of $C{O}_2$ on respiratory center
• C. Effect of nerves on respiratory center
• D. Effect of temperature on respiratory center

Answer 1

The correct option is C Effect of nerves on respiratory center

In the walls of terminal bronchioles and atria, stretch receptors are present which are normally inactive but become active when lungs are excessively inflated. Excessive inflation is due to failure of switch off of inspiration. The hering breuer reflex arch then becomes activated and sends inhibitory signals to the inspiratory center to switch off inspiration. This prevents lung alveoli from over stretching and bursting.

Therefore, the correct answer is option C.