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19 Cards in this Set
- Front
- Back
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Control skeletal muscles |
Somatic motor neurons |
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Control smooth cardiac muscle, many glands, lymphoid and some adipose tissues |
Autonomic neurons |
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Fight-or-flight branch |
Sympathetic |
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Rest-and-digest branch |
Parasympathetic |
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Pathways that consist of two neurons that synapse in an autonomic ganglion |
Autonomic pathways |
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Contains about 75% of all parasympathetic fibers |
Vagus nerve |
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Use ACh and Norepinephrine |
Sympathetic pathways |
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Use only ACh |
Parasympathetic pathways |
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What enzyme metabolizes Norepinephrine |
MAO |
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Receptor a1 |
Most sympathetic target tissues |
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Receptor a2 |
Gastrointestinal tract and pancreas |
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Receptor B1 |
Heart muscle, kidney |
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Receptor B2 |
Certain blood vessels and smooth muscle of some organs |
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Receptor B3 |
Adipose tissue |
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Use muscarinic receptors |
Parasympathetic |
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Number of neurons in the efferent path of the somatic motor |
1 |
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Number of neurons in the efferent autonomic path |
2 |
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Consists of axon terminals, motor end plates on the muscle membrane, and Schwann cell sheaths |
Neuromuscular junction |
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A region of muscle membrane that contains high concentrations of ACh receptors |
Motor end plate |
