Nervous system Autonomic nervous system Somatic nervous system (Smooth Muscle) (Skeletal Muscle) Para sympathetic OR Cholinergic (Muscarnic Receptor) (Resting state) Neurotransmitter - Acetycholine sympathetic OR Adrenergic (Adrenergic Receptor) (Emergency state) Neurotransmitter – Noradrenalin or Norepinephrine Cholinergic Para sympathomimetic Anti cholinergic Para sympatholytic Adrenergic Drugs sympathomimetic Cholinergic Receptor Nicotinic NN NM Adrenergic Receptor Muscarnic M1 M2 Anti Adrenergic Drugs sympatholytic Alpha M3 α1 Beta α2 β1 β2