Current Attempt in Progress The parasympathetic nervous system decreases all of the following EXCEPT heart rate respiratory rate digestion pupil size air pathway diameter eTextbook and Media

The parasympathetic nervous system is often described as the "rest and digest" system because it promotes relaxation and energy conservation in the body. When it's activated, heart rate decreases, respiratory rate slows, digestion is enhanced, and pupils constrict. However, it actually increases digestion rather than decreases it, making it a bit of an exception among the other options listed. In real-world terms, understanding the role of the parasympathetic nervous system can help individuals manage stress more effectively. Activities like deep breathing and meditation can stimulate this system, promoting a state of calmness and aiding in digestion. So, the next time you're feeling overwhelmed, take a moment to breathe deeply and relax your nervous system!