The neurotransmitter substance found between a motor neuron and a muscle cell is
A
Serotonin
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B
Endorphin
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C
Dopamine
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D
Acetylcholine
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Solution
The correct option is D Acetylcholine The neurotransmitter substance found between a motor neuron and a muscle cell is acetylcholine. In the autonomic nervous system, acetylcholine (ACh) is the neurotransmitter in the preganglionic sympathetic and parasympathetic neurons. ACh is also the neurotransmitter at the adrenal medulla and serves as the neurotransmitter at all the parasympathetic innervated organs. ACh is also the neurotransmitter at the sweat glands, and at the piloerector muscle of the sympathetic ANS.