Part 3 · Nerve and Muscle Physiology
Same concept, other depth: Foundation →
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Conduction velocity rises with diameter (lower axial resistance) and myelination (raises membrane resistance, lowers capacitance, confines regeneration to nodes rich in Nav1.6). Empirically, myelinated CV (m/s) ≈ 6 × outer diameter (µm) (Hursh); unmyelinated CV ∝ √diameter. Cooling slows conduction.
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