Neurotransmitters of the
Autonomic Nervous System
The major neurotransmitters released by the ANS are:
• Acetylcholine (ACh)
• Norepinephrine (NE)
The main neurotransmitter secreted by somatic motor neurons is Ach
Synthesis of neurotransmitters and neuropeptides
• Neurons synthesize neurotransmitters and other chemicals from substances
provided by the diet
• Small neurotransmitters (e.g. acetylcholine and dopamine) are synthesized
in the axon terminus
• Larger neurotransmitters (aka neuropeptides; e.g. Substance P) are
synthesized by organelles in the neuronal cell body
Autonomic Nervous System
The major neurotransmitters released by the ANS are:
• Acetylcholine (ACh)
• Norepinephrine (NE)
The main neurotransmitter secreted by somatic motor neurons is Ach
Synthesis of neurotransmitters and neuropeptides
• Neurons synthesize neurotransmitters and other chemicals from substances
provided by the diet
• Small neurotransmitters (e.g. acetylcholine and dopamine) are synthesized
in the axon terminus
• Larger neurotransmitters (aka neuropeptides; e.g. Substance P) are
synthesized by organelles in the neuronal cell body
