Muscle Physiology 2

The alpha motor neurons arrive first to move the

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Unformatted text preview: umber of Aps even in a relaxed state, showing the normal levels of APs. If the muscle is stretched, the number of APs increases. If muscle is contracted, not only do the intrafusals get a little relaxed, the afferents send LESS signals to the CNS. However, the intrafusals must be able to still tell the brain of any changes in the muscle. The co- activation of intrafusal and extrafusal fibers must accomm...
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