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Question

Stimulation of a muscle fibre by a motor neuron occurs at:

A
the neuromuscular junction
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B
the transverse tubules
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C
the myofibril
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D
the sarcoplasmic reticulum
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Solution

The correct option is A the neuromuscular junction
Stimulation of a muscle fibre by a motor neuron occurs at the neuromuscular junction. the area of contact between a nerve and muscle fibre is called motor end plate. At neuromuscular junction a neuron activates the muscle to contract. Acetyl choline is a neurotransmitter that is involved in the transmission of impulse at the neuromuscular junction.

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