An action potential is a wave of electricity that travels down a nerve, like a jolt, and a synapse is the small gap where this message jumps to the next nerve using chemicals. But as a physiotherapist, I see it is not just simple signals—it is a patient's hope to move a finger again. The textbooks say it is automatic, but in my clinic, rebuilding that pathway takes immense patience and practice, like teaching a village road to find its way after a new bypass has left it forgotten.
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