This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nervous System, Subject name: Physiology
Autonomic ganglion is mainly: 
Select and explain. 
A. Cholinergic, B. Adrenergic, C. Dopaminergic, D. Serotonergic
A: Cholinergic
Answer: A: Cholinergic 
Explanation: Ans. A. CholinergicANS (Autonomic Nervous system) Parasympathetic and sympathetica. Chemical transmission at autonomic junction: - (between pre and post-ganglionic neuron; and between the post ganglion neurons and the autonomic effectors) "The principal transmitter agents involved are Acetyl choline and Non-epinephrine, although Dopamine is also secreted by interneurons in the sympathetic ganglia and GnRH is secreted by some of the preganglionic neuronsb. On the basis of the chemical mediator, ANS is divided into: I- Cholinergic division (Ach transmitter) And II-Nor- adrenergic division (Nor Ad transmitter)c. Examples of cholinergic neurons: - (Ach transmitter)i. All preganglionic neuronii. Parasympathetic postganglionic neuronsiii. Sympathetic post ganglion neurons which innervate sweat glandiv. Sympathetic neurons which ends in the blood vessels (= produce vasodilation)