Nervous System · definition
The tenth cranial nerve and a major pathway of parasympathetic communication between the brainstem and organs in the chest and abdomen.
How the term is used
The vagus nerve has sensory and motor functions and contributes to regulation of structures including the heart, lungs, throat, and digestive tract.
Why it matters
It is frequently discussed in wellness spaces, where its role is often oversimplified into a single calm-down switch.
Where this comes up
Where this fits in a practice
The guides explain the idea in context; the service pathways are there when reading is not enough. Educational content only — nothing here is medical or mental-health care.