The enteric nervous system (ENS) contains approximately 500 million neurons in the gut wall—more than the entire spinal cord—and operates as a complete, autonomous neural network with two plexuses: the myenteric plexus coordinates peristaltic motility by sensing food bolus and triggering simultaneous excitation above and inhibition below, while the submucosal plexus regulates secretion and blood flow in real-time; the ENS produces about 95% of the body's serotonin through enterochromaffin cells, sends four times more information to the brain than it receives via the vagus nerve (80% afferent), and directly communicates with immune cells, functioning as a fully integrated 'second brain' that controls digestion without requiring signals from the central nervous system.
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There Are 500 Milion Neurons in Your Gut Wall Running Your Entire Digestive System Without the Brain追加:
Let's talk about the enteric nervous system. 500 million neurons live in your gut, more than your entire spinal cord.
No brain required.
This is the enteric nervous system. Two complete neural plexuses running digestion autonomously.
The myenteric plexus coordinates peristalsis, sensing the bolus, contracting above, relaxing below. No signal leaves the gut.
The submucosal plexus controls secretion and blood flow, matching resources to digestive demand in real time.
Enterochromaffin cells hold 95% of your body's serotonin, coordinating movement and sending signals to the brain.
80% of the vagus nerve is afferent. The gut sends four times more information to the brain than it receives.
ENS neurons also talk to immune cells, integrating neural and immune activity locally.
500 million neurons, two plexuses, digestive control, immune coordination, serotonin production, all autonomous.
The nervous system most people never think about. Follow for the next organ.
Educational only, not medical advice.
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