Muscle Spindle ·
The Stretch Reflex
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.com · intrafusal fibers · Piezo2 · Ia afferent · monosynaptic loop
Loop latency
~30 ms
Ia firing
0 Hz
Phase
—
Intrafusal fiber (spindle)
Annulospiral Ia ending
Piezo2 channel · Na⁺/Ca²⁺
Alpha motor neuron · contraction
Gamma motor neuron
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.com · Muscle Spindle and the Stretch Reflex