Unlike many nerves that serve a single function, the vagus is a mixed nerve, containing both sensory and motor fibers. It forms a bidirectional connection with the brain, influencing mood, anxiety, and even the inflammatory response.
Vagus Nerve Targets Organs And Functions
It stimulates the production of stomach acid and digestive enzymes, while also regulating the rhythm of intestinal contractions, known as peristalsis. Specifically, it sends parasympathetic fibers to the sinoatrial (SA) node and the atrioventricular (AV) node.
This structure allows it to relay information about the state of the internal organs back to the brain while also sending signals to control those organs. It innervates the bronchi and lungs, where it helps regulate bronchoconstriction and the production of mucus.
Vagus Nerve Targets Organs And Functions
This action ensures that the airways remain clear but not overly reactive. High vagal tone is associated with the ability to quickly return to a calm state after a stressful event.
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