A nerve fiber or axon, especially one that is part of the nervous system's structural framework.
From Greek 'axon' (axis) + 'neuron' (nerve), literally meaning 'nerve axis.' This term combines the two foundational elements of neural anatomy.
This archaic term reveals how anatomists in the 1800s were trying to name structures they could barely see, blending Greek roots to capture the idea of a 'nervy axis' even before they understood its true function.
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