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20 March, 00:13

What type of neuron contacts a muscle fiber and initiates a muscle contraction?

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  1. 20 March, 02:04
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    Motor neuron.

    Explanation:

    Muscle contraction begins with signal. The contraction occur when nervous system send signals. The impulse which is called signal is travel through a motor neuron.

    The whole process include following three steps:

    1) Message is traveled from nervous to muscular system and trigger the chemical reaction.

    2) This chemical reaction causes the muscle fibers to reorganize in such a way that shorter the length of them which is called contraction.

    3) when this signal is no longer remain, reverse chemical process occur and muscles relax.
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