| 1. | This is because vibrations stimulate muscle spindles in the calf muscles.
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| 2. | The afferent of the muscle spindle bifurcates in the spinal cord.
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| 3. | These neurons also play a role in adjusting the sensitivity of muscle spindles.
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| 4. | Muscle spindle derived GDNF neurotrophic factors must also be present for postnatal survival.
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| 5. | The imbalance causes an inaccurate reading from muscle receptors in the muscle spindle.
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| 6. | Gamma motor neurons assist in keeping the muscle spindle taut, thus adjusting sensitivity.
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| 7. | When a muscle lengthens, the muscle spindle is stretched and its nerve activity increases.
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| 8. | This process maintains the tautness of muscle spindles and is called alpha gamma co-activation.
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| 9. | Without gamma motor neurons, muscle spindles would be very loose as the muscle contracts more.
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| 10. | The parallel pulling keeps muscle spindles taut and readily able to detect minute changes in stretch.
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