Question

which neurotransmitter is used by motor neurons to control skeletal contraction?
o adrenaline
o acetylcholine
o serotonin
o noradrenaline

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Explanation:

Motor neurons use acetylcholine to communicate with skeletal muscle cells, triggering muscle contraction. Adrenaline and noradrenaline are involved in the body's stress - response. Serotonin is mainly associated with mood regulation and other non - muscle contraction functions.

Answer:

B. acetylcholine