Part 11 · Neurophysiology II — Motor Control, Autonomic and Higher Functions
Same concept, other depth: Foundation →
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Spindle (parallel to extrafusal fibres): nuclear bag₁ (dynamic), bag₂ (static), chain (static). Ia (annulospiral; all three fibre types) — length + velocity (dynamic); II (flower‑spray; bag₂, chain) — static length. γ‑dynamic → bag₁ (↑ dynamic Ia sensitivity); γ‑static → bag₂ + chain. β motor neurons innervate both.
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