题目内容
Only the preganglionic autonomic neurons of the sympathetic nervous system use acetylcholine (ACh) as their fast excitatory transmitter.
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The paravertebral ganglia form the sympathetic chain on each side of the vertebral column.
The response to stress typically involves an increase in parasympathetic activity in selected pathways, such as increased heart rate, skin blanching and perhaps high blood pressure....
The autonomic nervous system consists of the parts of the nervous system that regulate voluntary actions of skeletal muscles.
The parasympathetic stimulation frequently involves response by only one organ.
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