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Christian Gordon R.
1 motor neuron may stimulate 80 - 100 fibres or stimulate 1 - 2 fibres for specific movement. |
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Phomolo P.
muscle usually works across a joint. it is attached to both the bones by strong cords called tendons,when the muscle contracts,usually just one bone moves |
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Zachary B.
What is muscular contraction muscle fibre recruitment? |
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Rk S.
Muscular contraction:- Muscle fibre recruitment. The nerve that goes to the muscle is called a MOTOR NEURON. Motor neurons are responsible for stimulating a number of muscle fibres - together they are called a MOTOR UNIT. When precise movement is required, 1 motor unit may stimulate only 1-2 fibres, e.g. movement of the eye. When gross movement is required, 1 motor neuron may stimulate 80-100 fibres, e.g. quadriceps muscle. The all or nothing principle of muscle contraction When an electrical impulse reaches a threshold, all muscle fibres of that unit contract maximally. It is not possible for a muscle fibre to contract partially - it's all or nothing. |
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Muhammad S.
What is the contraction of muscles? |
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