Which neurotransmitter is released at the gland by the preganglionic neuron in the diagram?
A)Norepinephrine
B)Acetylcholine
C)Epinephrine
D)Dopamine
E)Serotonin

Question

Which neurotransmitter is released at the gland by the preganglionic neuron in the diagram? 
A)Norepinephrine 
B)Acetylcholine 
C)Epinephrine 
D)Dopamine 
E)Serotonin

Quizplus · Accepted Answer

The diagram shows a preganglionic neuron synapsing with a postganglionic neuron in a sympathetic ganglion. The neurotransmitter released by the preganglionic neuron in the sympathetic nervous system is always acetylcholine. Norepinephrine is the primary neurotransmitter released by postganglionic neurons in the sympathetic nervous system, but it is not released by the preganglionic neuron in this diagram. Epinephrine, dopamine, and serotonin are not typically released by either preganglionic or postganglionic neurons in the sympathetic nervous system.

Which Neurotransmitter Is Released at the Gland by the Preganglionic