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

the neuromuscular junction

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the transverse tubules

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the myofibril

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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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Similar questions

One of the following gives the correct sequence of the components in a reflex arc. This is :

(a) Receptors $\to$ Muscle $\to$ Sensory neuron $\to$ Motor neuron $\to$ Spinal cord

(b) Receptors $\to$ Motor neuron $\to$ Spinal cord $\to$ Sensory neuron $\to$ Muscle

(d) Receptors $\to$ Sensory neuron $\to$ Spinal cord $\to$ Motor neuron $\to$ Muscle

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