L7 pharmacology of the autonomous nervous system
4 important questions on L7 pharmacology of the autonomous nervous system
Anatomy of a typical neuron
- receive stimuli and transmit action potentials
- organization
- cell body or soma
- dendrites: input
- axons: output
neuroglia or glial cells
- support and protect neurons
Types of neurons: functional classification
- Sensory or afferent: action potentials towards CNS
- motor or efferent: action potentials away from CNS
- interneurons or association neurons: within CNS from one neuron to another
Neurotransmitters; sympathetic postganglionic neuron = -->
- Release norepinephrine (noradrenaline)
- maybe excitatory or inhibitory depending on the receptor subtype and the cell type
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Neurotransmitters; parasympathetic postganglionic neuron
- Release Ach (acetylcholine)
- usually on muscarinic (GPCR) receptors, effect is usually excitatory
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