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Definition
Autonomic neuron that originates in the central nervous system and terminates in an autonomic ganglion |
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| Autonomic neuron that has its cell body in the ganglion and sends its axon to the target tissue |
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Cranial nerve that carries sensory information and efferent signals to many internal organs including the heart and GI tract.
Sensory information from organs and parasympathetic output from brain to organs. |
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| Synapse between an autonomic neuron and its target muscle or gland |
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Definition
| Swollen regions along autonomic axons that store and release neurotransmitter. The primary neurotrasmiters ACh and noroepenephrine and are synthesized in the varicosity and stored in the vesicle for later use. It is released through Ca2+ ions and exocytosis just like every other neurotransmiter. |
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Definition
The enzyme that breaks down norepinephrine |
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| Alpha andrenergeric receptors |
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Definition
| most common. Respond strongly to norepenephrine and only weakly to epenephrine. |
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Term
| Beta adrenergeric receptors. |
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Definition
Three types
B1 : respond to both epenephrine and norepenephrine
B2: more sensitive to epenephrine than norepenephrine, not innervated
B3: Found in adipose tissue, innervated and more responsive to norepenephrine than to epenephrine.
Use cyclic AMP (cAMP) |
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Definition
Modified sympathetic ganglion, the inner portion of the adrenal gland that produces catecholamines |
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