11/19/2025
Our brain runs the entire show, but how many of us know what the wiring actually looks like?
This graphic is basically a cheat sheet for how your nervous system really works, and once you see it all laid out like this, a lot of things suddenly make sense.
On the left, you’ve got the trigeminal pathways — the highways that carry sensations from your face, eyes, mouth, and scalp straight into the brain. Every time you feel a toothache, a cold breeze on your cheek, or a headache creeping in… that’s the system lighting up.
On the right is the part we all live with every day without realizing it:
the autonomic nervous system: sympathetic vs. parasympathetic.
One revs you up.
One slows you down.
Your digestion, heartbeat, breathing, pupils, blood pressure, sweating, or***ms - all of it is on autopilot, shifting between “fight-or-flight” and “rest-and-digest.”
And then at the bottom, you’ve got the actual building blocks.
The neurons themselves: motor neurons, sensory neurons. interneurons: and the neurotransmitters they use to talk.
Dopamine, serotonin, GABA, norepinephrine, glutamate… the chemicals behind mood, focus, addiction, calmness, motivation, sleep, cravings, and emotion.
our daily experiences come down to tiny electrical signals and chemical messengers firing inside this system.
