Unformatted text preview: the sympathetic division, the parasympathetic division also has pre- and post- ganglionic neurons. In the parasympathetic division the ganglion will be closer to the area of innervation, which is unlike the sympathetic ganglion because they form immediately lateral and inferior to the spinal nerve, which makes up the so called "chain ganglion". The parasympathetic nervous system uses only acetylcholine as its neurotransmitter. The acetylcholine acts on two different types of receptors, the muscarinic and nicotinic cholinergic receptors. Most transmissions occur in two stages: When stimulated, the preganglionic nerve releases acetylcholine at the ganglion, which acts on nicotinic receptors of the postganglionic nerve. The postganglionic nerve then releases acetylcholine to stimulate the muscarinic receptors of the target organ. It is the muscarinic receptors that create the parasympathetic nervous systems actions of acting like the brake of a car....
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- Spring '10
- Psychology, Parasympathetic division, parasympathetic nervous systems, Parasympathetic fibers exit