Anatomy of the Sympathetic and Parasympathetic Divisions
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8 Terms
How many neurons are involved in the autonomic nervous system pathway from the spinal cord to the effector organ?
Two neuron chain: the preganglionic fiber and the postganglionic fiber.
In the sympathetic division, is the preganglionic neuron short or long?
Short
In the sympathetic division, is the postganglionic neuron short or long?
Long
In the parasympathetic division, is the preganglionic neuron short or long?
Long
In the parasympathetic division, is the postganglionic neuron short or long?
Short
What neurotransmitter is released by the preganglionic fibers in both the sympathetic and parasympathetic divisions?
Acetylcholine.
What neurotransmitter is released by postganglionic fibers in the sympathetic division?
Norepinephrine.
What neurotransmitter is released by postganglionic fibers in the parasympathetic division?
Acetylcholine.